H Pfaff1. 1. University of Cologne, School of Medicine and Dentistry, Institute and Polyclinic for Occupational and Social Medicine, Division of Medical Sociology and Centre for Health Services Research Cologne, 50933 Cologne, Germany. holger.pfaff@medizin.uni-koeln.de
Authors: Changmin Tang; Chaojie Liu; Pengqian Fang; Yuanxi Xiang; Rui Min Journal: Int J Environ Res Public Health Date: 2019-08-22 Impact factor: 3.390