Table 1

List of international and national databases of clinical trials used for this systematic review

DatabasesURL internet
ClinicalTrials.govhttps://clinicaltrials.gov
EU Clinical Trials Registerhttps://www.clinicaltrialsregister.eu
Australian New Zealand Clinical Trials Registryhttps://www.australianclinicaltrials.gov.au
Japan Primary Registries Networkhttp://www.umin.ac.jp/ctr/
International Standard Randomised Controlled Trial Numberhttps://www.isrctn.com
Chinese Clinical Trial Registryhttp://www.chictr.org.cn
Cuban Public Registry of Clinicalhttp://registroclinico.sld.cu
Peruvian Clinical Trials Registryhttp://www.ensayosclinicos-repec.ins.gob.pe
Clinical Trials Registry-Indiahttp://ctri.nic.in
German Clinical Trials Registerhttps://www.drks.de
The Netherlands National Trial Registerhttp://www.trialregister.nl
Brazilian Clinical Trials Registry (ReBec)http://www.ensaiosclinicos.gov.br
Clinical Research Information Service-Republic of Koreahttps://cris.nih.go.kr
Pan african Clinical Trial Registryhttp://www.pactr.org
Sri Lanka Clinical Trials Registryhttp://slctr.lk
Thai Clinical Trials Registerhttp://www.clinicaltrials.in.th
Iranian Registry of Clinical Trialshttp://www.irct.ir