Letter by Nikpour et al Regarding Article, "Effect of Warfarin Treatment on Survival of Patients With Pulmonary Arterial Hypertension (PAH) in the Registry to Evaluate Early and Long-Term PAH Disease Management (REVEAL)"
Circulation. 2016 May 17;133(20):e661.
doi: 10.1161/CIRCULATIONAHA.116.021847.