title: Commentary: methodological issues in clinical research.
authors.affiliation: Department of Psychology, Tel Aviv University, Ramat Aviv, Israel. Sadeh@post.tau.ac.il
authors.forename: A
authors.initials: A
authors.lastname: Sadeh
mesh_terms: D002648:Child; D002652:Child Behavior / Q000523:psychology; D002675:Child, Preschool; D006801:Humans; D010372:Pediatrics; D002666:Psychology, Child; D012106:Research / Q000592:standards*