Erratum: A Manganese Porphyrin Intercalated Lanthanum Niobic Acid Nanocomposite Utilized for Electrocatalytic Oxidation of Nitrite [ECS Electrochem. Lett., 3, H17 (2014)]. (15th November 2014) - Zhang, Xiaobo; Xu, Jiasheng; Wang, Mingyan; Siqin, Gaowa; Xu, Ruibo; Ma, Juanjuan; Liu, Lin; Zhang, Dongen; Tong, Zhiwei