Columbia subject headings:
Drugs--Prescribing--United States.
Electronic commerce--Law and legislation--United States.
Pharmacy--Law and legislation--United States.
Teleshopping--Law and legislation--United States.
Harvard subject headings:
Drugs--Prescribing--United States.
Electronic commerce--Law and legislation--United States
Pharmacy--Law and legislation--United States
Teleshopping--Law and legislation--United States.
Princeton subject headings:
Drugs--Prescribing--United States.
Electronic commerce--Law and legislation--United States.
Pharmacy--Law and legislation--United States.
Teleshopping--Law and legislation--United States.