Tzung-Hai Yen1, I-Kuan Wang2, Ching-Wei Hsu3. 1. Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan. Electronic address: m19570@adm.cgmh.org.tw. 2. Department of Nephrology, China Medical University Hospital and China Medical University, Taichung, Taiwan. 3. Department of Nephrology, Clinical Poison Center, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan.