RT Journal Article SR Electronic T1 Exploring the effectiveness of an online sexual health workshop on sexual and relationship beliefs and HIV/STI prevention knowledge among Singaporean youth JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP sextrans-2021-055297 DO 10.1136/sextrans-2021-055297 A1 Xu Ming Yong A1 Sumita Banerjee A1 Jing Lin A1 Thomas Nah A1 Melvin Tan A1 Adrian Tyler A1 Feng Yi Tong A1 Rayner Kay Jin Tan YR 2021 UL http://sti.bmj.com/content/early/2021/11/16/sextrans-2021-055297.abstract AB