Erratum: Multiple-Stage Structure Transformation of Organic-Inorganic Hybrid Perovskite CH_{3}NH_{3}PbI_{3} [Phys. Rev. X 6, 031042 (2016)] - Qiong Chen; Henan Liu; Hui-Seon Kim; Yucheng Liu; Mengjin Yang; Naili Yue; Gang Ren; Kai Zhu; Shengzhong Liu; Nam-Gyu Park; Yong Zhang (Physical Review X, 2017)