PeerJ Author 100 Points Contributions by role Author 100 Contributions by subject area Geriatrics Respiratory Medicine Medical Genetics Guo Chen PeerJ Author Summary Cardiology Genetics PeerJ Contributions Articles 1 August 27, 2020 Association analysis between chronic obstructive pulmonary disease and polymorphisms in circadian genes Guo Chen, Jingwei Zhang, Lijuan Zhang, Xuan Xiong, Dongke Yu, Yuan Zhang https://doi.org/10.7717/peerj.9806 PubMed 32913680