The efficacy of prayer: a triple-blind study.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007938:Leukemia / Q000628:therapy*; D008297:Male; D008602:Mental Healing; D012068:Religion and Medicine