BMC Medical Ethics
http://www.biomedcentral.com/bmcmedethics/content
(Accessed 2 May 2015)

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Research article
Clinical trialist perspectives on the ethics of adaptive clinical trials: a mixed-methods analysis
Laurie J Legocki, William J Meurer, Shirley Frederiksen, Roger J Lewis, Valerie L Durkalski, Donald A Berry, William G Barsan, Michael D Fetters BMC Medical Ethics 2015, 16:27 (3 May 2015)