| Affiliation: | 1. Department of Osteology, No. 1 People’s Hospital of Nanning, 89 Qixing Rd, Nanning 530022, Guangxi, China;2. Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China;1. Department of Family Studies and Gerontology, Global Aging and Community Initiative, 166 Bedford Highway, McCain Centre 201C, Halifax, Nova Scotia B2M2J6, Canada;2. Department of Sociology, Social Science Centre Room 5306, University of Western Ontario, London, Ontario N6A5C2, Canada;3. Global Aging and Community Initiative, 166 Bedford Highway, McCain Centre 201C, Halifax, Nova Scotia B2M2J6, Canada;4. Department of Sociology, RLP 2.622J, University of Texas at Austin, Austin, TX 78712-1086, USA;5. Department of Sociology, 430 Park Hall, University at Buffalo, Buffalo, NY 14260-4140, USA |
