@article{articlec049195d,
title   = {Association between six-minute walk distance and long-term outcomes in patients with pulmonary arterial hypertension: Data from the randomized SERAPHIN trial},
author = {Souza, Rogerio},
year = {2018},
doi = {10.1371/journal.pone.0193226},
journal   = {PLOS ONE}
}