The need for randomization in animal trials: an overview of systematic reviews. Hirst JA, Howick J, Aronson JK, Roberts N, Perera R, Koshiaris C, Heneghan C PLoS One. 2014; 9(6):e98856. Epub 2014 Jun 06. PMID: 24906117. Abstract CommentRecommendBookmarkWatch