Let the buyer (and reader) beware!: Targeted advertising in medical journals.
McDonnell
P J
PJ
D000329:Advertising; D004864:Equipment and Supplies; D006801:Humans; D009885:Ophthalmology / Q000592:standards*; D010506:Periodicals as Topic / Q000592:standards*; D004364:Pharmaceutical Preparations; D011643:Publishing / Q000592:standards
D004364:Pharmaceutical Preparations