1. Department of Medical Research Center, International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
2. Department of Endocrinology, Kailuan General Hospital, Tangshan, Hebei 063000, P.R. China
3. Beijing Key Laboratory for Immune‑Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China‑Japan Friendship Hospital, Beijing 100029, P.R. China
4. Graduate School, North China University of Science and Technology, Tangshan, Hebei 063000, P.R. China