title: Studies of drug usage in five Boston hospitals.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D011307:Drug Prescriptions; D004358:Drug Therapy; D005260:Female; D006760:Hospitalization; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008404:Massachusetts; D008499:Medical Records; D008510:Medication Systems, Hospital; D008875:Middle Aged; D009726:Nurses; D012723:Sex