title: The precautionary principle.
authors: Kathleen Rice Simpson is a Perinatal Clinical Nurse Specialist in St. Louis, MO, and the Editor-in-Chief of MCN. Dr. Simpson can be reached via e-mail at krsimpson@prodigy.net.
authors: Kathleen
authors: K
authors: Rice Simpson
mesh_terms: D000075202:Contraindications; D006801:Humans; D000068101:Maternal-Child Health Services; D018570:Risk Assessment; D019564:Unnecessary Procedures / Q000639:trends