Specific barriers to the conduct of randomized trials.
Duley L, Antman K, Arena J, Avezum A, Blumenthal M, Bosch J, Chrolavicius S, Li T, Ounpuu S, Perez AC, Sleight P, Svard R, Temple R, Tsouderous Y, Yunis C, Yusuf S.
Duley L, et al. Among authors: ounpuu s.
Clin Trials. 2008;5(1):40-8. doi: 10.1177/1740774507087704.
Clin Trials. 2008.
PMID: 18283079