Factors influencing distress from pain during labor.
D001294:Attitude to Health; D004723:Endorphins / Q000032:analysis; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D007743:Labor, Obstetric; D010146:Pain / Q000523:psychology*; D010465:Perception; D011247:Pregnancy; D012959:Socioeconomic Factors
D004723:Endorphins