Abstract

AK Ortqvist, C Lundholm, H Kieler. BMJ. 2014;349:g6979 The goal of this study was to investigate the association between exposure to antibiotics in fetal and early life and asthma in childhood, adjusting for confounding variables. The study included a population of 493 785 Swedish children born to women pregnant between July 2005 and December 2010 identified from the Medical Birth Register, including 180 894 who were eligible for sibling analyses. Key outcome and exposure data were collected from national demographic and health registries. Exposure to antibiotic use was categorized into the following 3 …

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