Quality and retrieval of obstetrical anaesthesia randomized controlled trials
Canadian Journal of Anesthesia/Journal canadien d anesthésie (1997) - Comments
pubmed: 8988818  doi: 10.1007/bf03014317  issn: 0832-610x  issn: 1496-8975 

Jennifer S. Bender, Stephen H. Halpern, Molly Thangaroopan, Alejandro R. Jadad, Arne Ohlsson