title: Ethical and practical problems in studying prayer.
authors.forename: D E
authors.initials: DE
authors.lastname: Hammerschmidt
mesh_terms: D004992:Ethics, Medical; D006801:Humans; D007258:Informed Consent; D007297:Inpatients / Q000523:psychology; D008602:Mental Healing; D012067:Religion; D012068:Religion and Medicine