Corrigendum to "Metabolic Acidosis and Strong Ion Gap in Critically Ill Patients with Acute Kidney Injury". (24th June 2018) - Zheng, Cai-Mei; Liu, Wen-Chih; Zheng, Jing-Quan; Liao, Min-Tser; Ma, Wen-Ya; Hung, Kuo-Chin; Lu, Chien-Lin; Wu, Chia-Chao; Lu, Kuo-Cheng