Department of Orthopedic, Tri-Service General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Defense Medical Center, Taipei, Taiwan, ROC; Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, ROC. School of Medicine, National Defense Medical Center, Taipei, Taiwan, ROC; Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, ROC; Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, ROC. School of Medicine, National Defense Medical Center, Taipei, Taiwan, ROC; Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, ROC; Department of Pathology, Tri-Service General Hospital Songshan Branch, Taipei, Taiwan, ROC. School of Medicine, National Defense Medical Center, Taipei, Taiwan, ROC; Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, ROC; Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, ROC. Electronic address: weiliang0508@gmail.com.