1. SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials;Chan;BMJ,2013
2. Intention-to-treat principle;Montori;CMAJ,2001
3. Inclusion of patients in clinical trial analysis: the intention-to-treat principle;Heritier;Med J Aust,2003
4. Missing outcomes in randomized trials: addressing the dilemma;Altman;Open Med,2009
5. Addressing missing data in clinical trials;Fleming;Ann Intern Med,2011