Clinical features and predictors of severity in COVID-19 patients with critical illness in Singapore oleh Ser Hon Puah, Barnaby Edward Young, Po Ying Chia, Vui Kian Ho, Jiashen Loh, Roshni Sadashiv Gokhale, Seow Yen Tan, Duu Wen Sewa, Shirin Kalimuddin, Chee Keat Tan, Surinder K. M. S. Pada, Matthew Edward Cove, Louis Yi Ann Chai, Purnima Parthasarathy, Benjamin Choon Heng Ho, Jensen Jiansheng Ng, Li Min Ling, John A. Abisheganaden, Vernon J. M. Lee, Cher Heng Tan, Raymond T. P. Lin, Yee Sin Leo, David C. Lye, Tsin Wen Yeo, Singapore 2019 novel coronavirus outbreak research team