Thanks to all those who reviewed for Trials in 2015.

A peer-reviewed journal would not survive without the generous time and insightful comments of the reviewers, whose efforts often go unrecognized. Although final decisions are always editorial, they are greatly facilitated by the deeper technical knowledge, scientific insights, understanding of social consequences, and passion that reviewers bring to our deliberations. For these reasons, the Editors-in-Chief and staff of Trials warmly thank the 854 reviewers whose comments helped to shape the journal, for their invaluable assistance with review of manuscripts in Volume 16 (2015)