Women's important relationships during pregnancy and the preterm labor event.
D000328:Adult; D005190:Family; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D007752:Obstetric Labor, Premature / Q000451:nursing / Q000523:psychology*; D011247:Pregnancy / Q000523:psychology*; D012189:Retrospective Studies; D012944:Social Support