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. 2011 Jul 11;4(2):160–184. doi: 10.1093/phe/phr013

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© The Author 2011. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Selection of publications. ML, Medline; WL, Westlaw; ETHX, ETHXWeb; JST, JSTOR; E-B, Ethos-Beta Electronic Theses Online Service; WC, Worldcat; Euroeth., Euroethics; LocPl., LocatorPlus; asterisks indicate number of publications that were not also retrieved by the systematic search in ML. Reasons for excluding 1985 publications: no content on research conducted on humans; or no content on clinical trials of drugs conducted on humans; or no content on whether PTA the trial drug should; or need not, be ensured to participants, their host community or country; or no reason for the view that PTA the trial drug should (or need not) be ensured to participants.