A pragmatic-explanatory continuum indicator summary (PRECIS): a tool to help trial designers.
J Clin Epidemiol. 2009 May 1;62(5):464-75.
[The PRECIS-2 tool: designing trials that are fit for purpose].
Zhonghua Liu Xing Bing Xue Za Zhi. 2018 Feb 10; 39 (2): 222-226.
Trials. 2012 Apr 27; 13: 50.