来源:BMC Medical Research Methodology , 2021
作者:Elizabeth Murphy;Christopher W. Jones;Brian W. Roberts;等
关键词:Trial registration;Clinicaltrials.gov;...
使用许可:CC BY
来源:BMC Medical Research Methodology , 2021
作者:Elizabeth Murphy;Christopher W. Jones;Brian W. Roberts;等
关键词:Trial registration;Clinicaltrials.gov;...
使用许可:CC BY