TY - GEN AU - Smart,S AU - Williams,C TI - Evidence based advertising? Half of drug advertisements in BMJ over six months cited no supporting evidence SN - 0959-8138 PY - 1998///0204 KW - Advertising KW - standards KW - Drug Industry KW - Evidence-Based Medicine KW - Humans KW - Meta-Analysis as Topic KW - Randomized Controlled Trials as Topic N1 - Publication Type: Letter; Comment ER -