Current Opinion in Pediatrics was launched in 1989. It is one of a successful series of review journals whose unique format is designed to provide a systematic and critical assessment of the literature as presented in the many primary journals. The fields of pediatrics are divided into 18 sections that are reviewed once a year. Each section is assigned a Section Editor, a leading authority in the area, who identifies the most important topics at that time. Here we are pleased to introduce the Journal's Editor in Chief and Section Editors for this issue. EDITOR-IN-CHIEF Margaret Kendrick HostetterMargaret Kendrick HostetterMargaret Kendrick Hostetter, MD, was born in Toledo, Ohio, USA and graduated from Denison University in Granville, Ohio, USA, summa cum laude and Phi Beta Kappa as a National Merit Scholar. After graduate school in English literature at Rice University in Houston, Texas, USA, she matriculated at Houston's Baylor College of Medicine, Texas, USA and graduated AOA in 1975, ranked first in the class. She completed her internship and residency in pediatrics at Boston Children's Hospital, USA (1975-1978) and a combined fellowship in infectious diseases at Boston Children's, the Peter Bent Brigham Hospital, USA and the Beth Israel, USA (1978-1980). After two years as instructor at Boston Children's, she moved to the University of Minnesota, USA, where over 16 years she rose to become the American Legion Heart Research Professor (endowed chair), Chief of the Division of Pediatric Infectious Diseases, and Vice Chair for Research in the Department of Pediatrics. In 1998, she was recruited to the Department of Pediatrics at Yale, USA, as head of the Yale Child Health Research Center. In 2002, she became Chair of the Department of Pediatrics and the Jean McLean Wallace Professor (endowed chair), the first woman to hold that position at Yale. She served as chair at Yale until 2010, when she was recruited to Cincinnati Children's Hospital, USA, and became the first female chair of the Department of Pediatrics and Director of the Cincinnati Children's Research Foundation. She retired from her position at Cincinnati Children's in February 2020 and now serves as Editor-in-Chief of Current Opinion in Pediatrics. In the national arena, she has been elected President of the Society for Pediatric Research and the American Pediatric Society. Peer recognition includes several awards for her research on Streptococcus pneumoniae and Candida albicans from the Society for Pediatric Research, the American Academy of Pediatrics, and private foundations. Other memberships include the American Society for Clinical Investigation, the Association for American Physicians, and the National Academy of Medicine. She has been principal investigator of NIH grants from 1985 to 2020 and served as program director for the NICHD-funded Pediatric Scientist Development Program for more than 22 years, where she fostered the research career development of more than 200 pediatric physician-scientists across the US and Canada. Graduates of the PSDP now hold leadership positions in research and academic medicine throughout North America. She lives in New York City, where her two children and four grandchildren reside. SECTION EDITORS Kara Odom WalkerKara Odom WalkerKara Odom Walker, MD, MPH, MSHS is Executive Vice President and Chief Population Health Officer (CPHO), Nemours Children's Health System, USA, as of September 2020. At Nemours, Dr Walker leads the Nemours National Office, Delaware Valley primary care, the Value Based Services Organization and related advocacy and public policy, as well as all aspects of population health strategy, research, innovation, and implementation. Her scope of responsibility includes advancement of the overall health and well-being of children, both broadly and among the populations served by Nemours. Dr Walker will collaborate with operational leaders and share accountability for managed care initiatives, to include medically complex case management, school-based wellness programs, and other services for specific populations. Working closely with the Executive Cabinet, Dr Walker and her team will develop and implement the organization's national and state-specific advocacy strategies to help achieve outcomes tied to health and value while also leading Nemours's federal policy agenda. Previously she was sworn in as Secretary of the Delaware Department of Health and Services (DHSS) and served in Governor Carney's first elected term from February 2017 through 2020. As Secretary, she led the principal agency charged with keeping Delawareans healthy, ensuring they get the health care they need in a fast-changing world, and providing children, families and seniors with essential social services including food benefits, disability-related services, and mental health and addiction treatment. She oversaw one of the largest departments in Delaware's government with an annual budget of more than $2 billion. Dr Walker's many accomplishments at DHSS include developing first-in-the-nation health care spending and quality benchmarks in Delaware, USA; creating a state reinsurance program that reduced premiums in its first year and increased the number of people covered; and shaping new Medicaid managed care contracts that include quality metrics and embed paying for value – not volume – in health care. Secretary Walker previously worked as the Deputy Chief Science Officer at the Patient Centered Outcomes Research Institute (PCORI), a non-profit, nongovernment organization in Washington that is authorized by Congress to improve evidence available to help patients, caregivers, employers, insurers, and policymakers make informed health care decisions. She managed the Institute's research investments, which totalled $1.6 billion in 2016, toward a planned total of $2.5 billion by 2019. She is a board-certified practicing family physician and is a Fellow of the American Academy of Family Physicians. Prior to joining PCORI, she was a faculty member of Family and Community Medicine at the University of California, San Francisco, USA. She has worked with several national organizations to advocate for health equity and for access to quality health care in minority and underserved populations, including the National Medical Association, the Student National Medical Association and the American Medical Association. Dr Walker has been recognized for leadership by Harvard Business School's Program for Leadership Development, the American Medical Association and the National Medical Association. A respected leader, innovator, and clinician, she was elected to the National Academy of Medicine (NAM) in 2018. Election to the NAM is considered one of the highest honours in the fields of health and medicine, recognizing individuals who have demonstrated outstanding professional achievement. Dr Walker completed her family medicine residency at the University of California, San Francisco, USA, graduated with a Masters’ of Public Health from Johns Hopkins School of Public Health and Masters’ of Health Services Research from the University of California, Los Angeles, USA, School of Public Health, where she also completed her fellowship in the Robert Wood Johnson Clinical Scholars program. Allison Gertel-RosenbergAllison Gertel-RosenbergAllison Gertel-Rosenberg, MS, has spent her career addressing some of the most important and challenging issues in public health. As Vice President, National Prevention and Practice for Nemours Children's Health's National Office of Policy and Prevention, USA, she is responsible for leading the Office's efforts to spread and scale promising practices and strategic prevention initiatives designed at the intersections of early childhood and health and population health and clinical care on a national scale. These efforts have included the highly successful Moving Health Care Upstream, Let's Move! Child Care, Healthy Kids, Healthy Future and the National Early Care and Education Learning Collaborative initiative. Allison's involvement has run the gamut from securing funding for these collaborations, as she has leveraged more than $50 million in grants over the course of her career, to playing a critical role in planning and implementing the strategic and operational measures necessary to make them successful. Allison is widely recognized as an expert on public health and population health and has presented at numerous national conferences on the value of investment in childhood health, patterns of drug abuse, assessments of the efficacy of prevention programs, youth smoking cessation, and the development of state-wide anti-tobacco media campaigns. In addition, she has published several articles on children's health issues. Before joining Nemours in 2006, Allison was the Program Manager for the Office of Policy Development for the Division of Addiction Services at the New Jersey Department of Human Services, USA. In that position, she was responsible for supervising a staff of researchers engaged in addiction-related research and overseeing treatment-related data collection and analysis. Allison received her M.S. in Health Policy and Management from the Harvard School of Public Health, USA, and her B.S. in Public Health from Rutgers College, USA. Brigitte WidemannBrigitte WidemannAs chief of National Cancer Institute's Pediatric Oncology Branch, Dr Widemann oversees and active basic, translational and clinical research program for children and young adults with hematologic and solid malignancies. Dr Widemann joined the NCI in 1992 as a pediatric hematology oncology fellow after having obtained her MD and completed pediatric residency at the University of Cologne in Germany. Her research has been focused on drug development and early clinical trials for children with refractory solid tumours or genetic tumour predisposition syndromes, in particular neurofibromatosis type 1 (NF1). The work of her research team on NF1 resulted in the first U.S. Food and Drug Administration approved medical therapy, the MEK inhibitor selumetinib, for children with NF1 and inoperable, symptomatic plexiform neurofibroma. She received tenure at the NIH in 2009 and became the Chief of the POB in 2016. Dr Widemann is a member of the Association of American Physicians and recipient of the AACR-Joseph H. Burchenal Award for Outstanding Achievement in Clinical Cancer Research. She serves as special advisor to the NCI Director for childhood cancer and has authored more than 200 original scientific papers, reviews, and book chapters, and has conducted many clinical trials. Daniel W. GreenDaniel W. GreenDr Daniel W. Green has been practicing at the Hospital for Special Surgery in New York, USA, since 1998 and is currently the Director of the Pediatric Sports Program for the Division of Pediatric Orthopedic Surgery. He has over 200 published papers with his research focusing on pediatric knee surgery, cartilage repair, pediatric ACL surgery, pediatric growth plate surgery, pediatric fracture care, and osteogenesis imperfecta. Dr Daniel Green is the Associate Director of the Hospital for Special Surgery Orthopedic Surgery Residency Program and Clinical Professor of Orthopedic Surgery at Weill Cornell Medical College, USA. Henry H. BernsteinHenry H. BernsteinDr Bernstein is a Professor of Pediatrics at Zucker School of Medicine at Hofstra/Northwell in New York, USA. He taps into his extensive 36–year experience as a general pediatrician in private practice, the National Health Service Corps, and as Chief of General Academic Pediatrics at urban, suburban, and rural children's hospitals to promote the health and well-being of children, their families, and their communities. His private, community-based primary care (generalist) experiences in combination with academic leadership responsibilities have provided him with a value-added, translational science perspective, unique from many others in academia. This tacit knowledge enables him to fulfil a lifelong passion of communicating, educating, and translating science into clinical settings, educational venues, policy-making, and media interactions to advance the health of children. Research is consistently woven into the fabric of Dr Bernstein's clinical practice, which has served as a “laboratory” for his active studies. His research and quality improvement initiatives focus on issues important to Academic General Pediatrics and community-based practice, including immunizations, infectious diseases, postpartum newborn discharge, childhood obesity, breastfeeding, health promotion, preventive health screening in primary care, technology and medical education. His commitment, innovative spirit, and enthusiasm also encompass many facets of medical education along the continuum from training and mentoring future physicians to fostering lifelong learning and supporting the continuous professional development of practicing pediatricians. Dr Bernstein is Associate Editor of the American Academy of Pediatrics’ (AAP) Red Book Online (www.aapredbook.org) and a former voting member of the Centers for Disease Control and Prevention's (CDC) Advisory Committee on Immunization Practice (ACIP). He serves as a consultant on the ACIP COVID-19, Influenza, and Immunization Schedules for Adults and Children workgroups. He also is an ex-officio member of the AAP's Committee on Infectious Diseases (Red Book Committee). In addition, he is Editor-in-Chief Emeritus of PediaLink (www.pedialink.aap.org), the AAP's online home for lifelong learning, and Chair of the interdisciplinary Bright Futures Health Promotion Workgroup, which created a distinctive health promotion curriculum, videos, and a companion educational website (www.pediatricsinpractice.org). Dr Bernstein has been Editor of the Office Pediatrics Series in Current Opinion in Pediatrics since 1995 and was Senior Editor of Pediatrics on the public website of Harvard Medical School's Health Publications Division for 17 years. He regularly shares his knowledge and expertise by educating the public, writing for health information websites and often participating in media interviews on a variety of pediatric health care issues including immunizations, diagnosis and treatment of common childhood infectious diseases and conditions, and practical information for parents, teachers and caregivers. In the spirit of lifelong learning, Dr Bernstein earned a masters in healthcare management (MHCM) at Harvard T. H. Chan School of Public Health, USA in 2013 and has been a faculty member in this Executive Education Masters degree program since. He actively maintains his certification by the American Board of Pediatrics. He completed his residency training in pediatrics at St. Christopher's Hospital for Children in Philadelphia, USA after earning his medical degree from the University of Medicine and Dentistry of New Jersey - School of Osteopathic Medicine, USA. Hank and his wife, Sophie, have been married for 41 years, are extremely proud of their 36-year-old daughter, Lauren, and 30-year-old son, David, and are “over the moon” with their first grandchild Eva.