title: Challenging aspects of adolescent medicine.
mesh_terms: D000293:Adolescent; D001291:Attitude of Health Personnel; D003267:Contraception; D005260:Female; D006801:Humans; D008297:Male; D010287:Parent-Child Relations; D010372:Pediatrics; D010817:Physician-Patient Relations; D011247:Pregnancy; D011627:Puberty; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000517:prevention & control; D019966:Substance-Related Disorders / Q000517:prevention & control