1. Trends in global clinical trial registration: an analysis of numbers of registered clinical trials in different parts of the world from 2004 to 2013. Issue 9 (25th September 2015) Authors: Viergever, Roderik F; Li, Keyang Journal: BMJ open Issue: Volume 5:Issue 9(2015) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗