PLoS clinical trials.
Public Library of Science.
Cambridge, UK : Public Library of Science,
2006-
Refereed/Peer-reviewed
Title from PDF caption (publisher's Web site, viewed June 8, 2006).
Articles added consecutively and archived weekly.
Mode of access: World Wide Web.
Latest issue consulted: 2(6) (2007) (viewed June 12, 2009).
Clinical trials
Clinical trials
Clinical Trials as Topic.
Clinical Trials.
Clinical trials.