Source	Date Range Searched	Hits Retrieved
MEDLINE (pubmed)	Oct 07‐oct 08	10
Embase (Ovid SP)	2007‐oct 08	10
PsycINFO (Ovid SP)	2007‐oct 08	9
CINAHL (Ovid SP)	2007‐oct 08	7
Lilacs (bireme)	2007‐08	0
CDCIG SR*	2007‐08	6
CENTRAL (The Cochrane Library) issue 4 2008		2
ISTP Conference Proceedings http://portal.isiknowledge.com/portal.cgi	2007‐08	2
Australian Digital Theses Program http://adt.caul.edu.au/		0
Canadian Theses and Dissertations http://www.collectionscanada.ca/thesescanada/index‐e.html		0
DATAD http://www.aau.org/datad/backgrd.htm		0
Dissertation Abstract Online http://wwwlib.umi.com/dissertations/gateway	Not done	0
UK National Research Register (archive) http://www.update‐software.com/projects/nrr/	Done with CCT
Current Controlled trials: Meta Register of Controlled trials (mRCT) http://www.controlled‐trials.com/	all	8
ISRCTN Register	Done together with CCT
Nederlands Trial Register http://www.trialregister.nl/trialreg/index.asp		0
ClinicalTrials.gov http://www.ClinicalTrials.gov	Done together with CCT
IPFMA Clinical Trials Register www.ifpma.org/clinicaltrials.html		0
Lundbeck Clinical Trial Registry http://www.lundbecktrials.com	Not done
Forest Clinical trial Registry http://www.forestclinicaltrials.com/	Not done
UMIN Japan Trial Register http://www.umin.ac.jp/ctr/		0