Clinical trial registration

• The SJMS advocates the registration of clinical trials at or before the time of the first patient enrollment. SJMS would publish clinical trials that have been registered with a clinical trial registry. According to ICMJE guidelines, the clinical trial is any research that assigns people to an intervention, with or without control group, to investigate the associations between an intervention and a health outcome. Registration in the following registers is accepted by the SJMS: http://www.trialregister.nl/trialreg/index.asp; http://www.umin.ac.jp/ctr; http://isrctn.org/ and http://www.clinicaltrials.gov/