Liang Hailun, Beydoun May A, Eid Shaker M
1 Assistant Professor, School of Public Administration and Policy, Renmin University of China, China.
2 Staff Scientist, Laboratory of Epidemiology and Population Sciences, National Institute on Aging, NIA/NIH/IRP, USA.
J Health Serv Res Policy. 2019 Jul;24(3):172-181. doi: 10.1177/1355819619836130.