TY - STAND AU - R. Tannen AU - K. Barnhart AU - J. Rubin BT - Learn Health Syst DO - 10.1002/lrh2.10193 M1 - 3 PY - 2019 EP - e10193 T2 - Learn Health Syst TI - Advantages of large medical record database for outcomes research: Insights into post-menopausal hormone therapy VL - 3 SN - 2379-6146 ER -