TY - STAND AU - T. Tran AU - S. Suissa BT - Am J Epidemiol DO - 10.1093/aje/kwaa242 PY - 2020 T2 - Am J Epidemiol TI - Comparing New-User Cohort Designs: The Example of Proton Pump Inhibitor Effectiveness in Idiopathic Pulmonary Fibrosis SN - 0002-9262 ER -