Naimi, Timothy S., Babor, Thomas, Saitz, Richard, Chikritzhs, Tanya, Stockwell, Timothy, McCambridge, Jim, Miller, Peter, Xuan, Ziming, Bradley, Katharine, Blanchette, Jason G., Kypri, Kypros. Wiley-Blackwell; 2015. Let's not “relax” evidence standards when recommending risky preventive therapeutic agents (letter).