Pathways to medicine use.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D011307:Drug Prescriptions; D005260:Female; D006801:Humans; D008297:Male; D008396:Maryland; D008875:Middle Aged; D008962:Models, Theoretical; D004366:Nonprescription Drugs; D012646:Self Administration; D012651:Self Medication
D004366:Nonprescription Drugs