1. Investigation of three clusters of COVID-19 in Singapore: implications for surveillance and response measures. Issue 10229 (28th March 2020) Authors: Pung, Rachael; Chiew, Calvin J; Young, Barnaby E; Chin, Sarah; Chen, Mark I-C; Clapham, Hannah E; Cook, Alex R; Maurer-Stroh, Sebastian; Toh, Matthias P H S; Poh, Cuiqin; Low, Mabel; Lum, Joshua; Koh, Valerie T J; Mak, Tze M; Cui, Lin; Lin, Raymond V T P; Heng, Derrick; Leo, Yee-Sin; Lye, David C... Journal: Lancet Issue: Volume 395:Issue 10229(2020) Page Start: 1039 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗