1 Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary's Hospital Luodong, Yilan, Taiwan.
2 Department of Nursing, Camillian Saint Mary's Hospital Luodong, Yilan, Taiwan.
3 Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary's Hospital Luodong, Yilan, Taiwan. Electronic address: chungyy2001@yahoo.com.tw.