Corrigendum to "Probing built-in stress effect on the defect density of stretched monolayer graphene membranes" [Carbon 152 (2019) 233–240]. (December 2019) - Hu, Kai-Ming; Xue, Zhong-Ying; Liu, Yun-Qi; Song, Peng-Hui; Le, Xian-Hao; Peng, Bo; Yan, Han; Di, Zeng-Feng; Xie, Jin; Lin, Li-Wei; Zhang, Wen-Ming