Arnold LM, Williams DA, Hudson JI, Martin SA, Clauw DJ, Crofford LJ, Wang F, Emir B, Lai C, Zablocki R, Mease PJ. Development of responder definitions for fibromyalgia clinical trials. Arthritis Rheum. 2012 Mar 1;64(3):885-94.
Perez GS, Garcia Rodriguez LA, Castellsague J, Duque OA. Hormone replacement therapy and risk of venous thromboembolism: population based case-control study. BMJ. 1997 Mar 15;314(7083):796-800.