title: Smile for your sphincter.
authors.forename: Ina May
authors.initials: IM
authors.lastname: Gaskin
mesh_terms: D000328:Adult; D020070:Cervical Ripening / Q000502:physiology; D002585:Cesarean Section / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007745:Labor Onset / Q000502:physiology; D007743:Labor, Obstetric / Q000502:physiology; D008880:Midwifery / Q000193:education* / Q000592:standards; D009321:Natural Childbirth / Q000451:nursing*; D009723:Nurse-Patient Relations; D015404:Nursing Methodology Research; D011247:Pregnancy; D014219:Trial of Labor; D014590:Uterine Contraction / Q000502:physiology