Corrigendum to: Genomic epidemiology reveals the reduction of the introduction and spread of SARS-CoV-2 after implementing control strategies in Republic of Korea, 2020. Issue 2 (27th October 2021) - Kwon, Jung-Hoon; Kim, Jeong-Min; Lee, Dong-Hun; Park, Ae Kyung; Kim, Il-Hwan; Kim, Da-Won; Kim, Ji-Yun; Lim, Noori; Cho, Kyeong-Yeon; Kim, Heui Man; Lee, Nam-Joo; Woo, SangHee; et al.