Corresponding Author

Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA

Leonard Davis Institute of Health Economics, Philadelphia, PA, USA

Institute for Biomedical Informatics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA

Correspondence

Yong Chen, Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA 19104, USA.

ychen123@pennmedicine.upenn.edu

Yu-Lun Liu, Department of Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.

Yulun.Liu@UTSouthwestern.edu