The challenge of postal medicine.
Rothschild
B M
BM
D000328:Adult; D011307:Drug Prescriptions / Q000592:standards*; D005260:Female; D006801:Humans; D010593:Pharmaceutical Services / Q000592:standards*; D011177:Postal Service; D014481:United States; D014859:Warfarin / Q000592:standards
D014859:Warfarin