ASSOCIATION OF METFORMIN INTAKE WITH BLADDER CANCER RISK AND ONCOLOGIC OUTCOMES IN TYPE 2 DIABETES MELLITUS PATIENTS: A SYSTEMATIC REVIEW AND META-ANALYSIS Article Hu J., Chen J.B., Cui Y., Zhu Y.W., Ren W.B., Zhou X., Liu L.F., Chen H.Q., Zu X.B. Medicine (Baltimore). Lippincott Williams & Wilkins. Vol. 97. 2018. e11596 p.