BibTex format
@article{Behr:2021:10.1016/S2213-2600(20)30356-8,
author = {Behr, J and Nathan, SD and Wuyts, WA and Bishop, NM and Bouros, DE and Antoniou, K and Guiot, J and Kramer, MR and Kirchgaessler, K-U and Bengus, M and Gilberg, F and Perjesi, A and Harari, S and Wells, AU},
doi = {10.1016/S2213-2600(20)30356-8},
journal = {LANCET RESPIRATORY MEDICINE},
pages = {85--95},
title = {Efficacy and safety of sildenafil added to pirfenidone in patients with advanced idiopathic pulmonary fibrosis and risk of pulmonary hypertension: a double-blind, randomised, placebo-controlled, phase 2b trial},
url = {http://dx.doi.org/10.1016/S2213-2600(20)30356-8},
volume = {9},
year = {2021}
}