Department of Pain Qinghai Provincial People’s Hospital Xining 810000 Qinghai Province China;
Department of Pain Qinghai Provincial People’s Hospital Xining 810000 Qinghai Province China;
Department of Pain Qinghai Provincial People’s Hospital Xining 810000 Qinghai Province China;
Department of Pain Qinghai Provincial People’s Hospital Xining 810000 Qinghai Province China;
Department of Pain Qinghai Provincial People’s Hospital Xining 810000 Qinghai Province China;
Chronic pain; Vitamin D deficiency; Bone mass reduction; Osteoporosis; Bone mineral density;