Risk assessment: a systematic approach to teenage pregnancy.
D000293:Adolescent; D001294:Attitude to Health; D005260:Female; D006801:Humans; D009747:Nutritional Physiological Phenomena; D010290:Parents / Q000193:education; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012306:Risk; D012959:Socioeconomic Factors