RT Journal Article SR Electronic T1 Decrease in the incidence of chlamydia infection during the COVID-19 pandemic in South Korea JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP sextrans-2021-055074 DO 10.1136/sextrans-2021-055074 A1 Seokyoung Chang A1 Sukhyun Ryu A1 Dasom Kim A1 Byung Chul Chun YR 2021 UL http://sti.bmj.com/content/early/2021/06/04/sextrans-2021-055074.abstract AB