1 Division of Nephrology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan. Electronic address: cwhuang0824@vghks.gov.tw.
2 School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Dermatology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan.