Medical research has 'black hole': negative results often fail to get published in journals; some blame drug industry.
Hensley
Scott
S
Abboud
Leila
L
D035843:Biomedical Research / Q000191:economics / Q000941:ethics*; D004345:Drug Industry / Q000941:ethics; D006801:Humans; D017594:Publication Bias; D012109:Research Support as Topic