Onyeabor's letter highlighted some of the ethical complexities inherent in posttrial access. Although we agree that ethically, individuals benefiting from antiretroviral therapy should continue to receive it, the challenge for all of us involved in the ethical conduct of research is to be clear about how this should occur. Many study participants in developing countries, including those in the studies cited, understandably feel that antiretroviral treatment should be continued for life.1 Yet, in other studies, participants appeared to expect national programs to provide treatment, not necessarily the researchers themselves.2 Similar to other influential ethical guidance documents,3–6 the National Institutes of Health guidelines that apply to the studies in our sample recognize that researchers have an obligation to address the provision of posttrial antiretroviral therapy, but not an obligation to directly provide it.7 Onyeabor seems to suggest that researchers have greater obligations—namely, that researchers should provide posttrial access for participants themselves in recognition of the contributions that participants make to advancing science. Though we agree with Onyeabor that research participants certainly deserve recognition for their contributions, the nature and extent of this recognition might justifiably vary according to the contribution made, and we would argue that participants are owed a fair share of the benefits.8 However, we do not agree that researchers necessarily bear long-term obligations to provide care after their research is over. In conducting research, researchers have many important obligations, including those to maintain scientific integrity and protect research participants. Although the relationship between a researcher and a research participant cannot last forever, researchers' obligations to participants do not end when the last pieces of data are collected. Just as hospital physicians should engage in careful discharge planning when patients are being released from their care, we would argue that researchers have obligations to end their relationships with research participants responsibly. This obligation to help participants transition to local sources of care might increase or decrease in intensity depending on several factors, including the extent of participants' need for assistance and dependence on the researchers, whether local sources of care exist, and how long the research relationship has lasted. More work needs to be done in this area, but we hope the findings from our study help advance a more careful understanding of what it means to conduct and conclude responsible research.
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