title: Pain response in Negro and white obstetrical patients.
mesh_terms: D001741:Black or African American; D000367:Age Factors; D003469:Culture; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D010146:Pain; D011247:Pregnancy; D012923:Social Class; D011795:Surveys and Questionnaires; D044465:White People