PeerJ Author 135 Points Contributions by role Author 135 Contributions by subject area Gastroenterology and Hepatology Internal Medicine Chen Yang PeerJ Author Summary Additive Manufacturing Anatomy & Physiology PeerJ Contributions Articles 1 May 27, 2020 Role of echocardiography in screening for portopulmonary hypertension in liver transplant candidates: a meta-analysis Xin Yin, Yueming Shao, Yu Zhang, Hui Gao, Tingting Qin, Xiaoyu Wen, Chen Yang https://doi.org/10.7717/peerj.9243 PubMed 32518736