Visvalingam, N., Sathish, T., Soljak, M., Chua, A.-P., Dunleavy, G., Divakar, U., Nazeha, N., Bajpai, R., Soh, C. K., Woon, K. K., Christopoulos, G., & Car, J. (2020). Prevalence of and factors associated with poor sleep quality and short sleep in a working population in Singapore. SLEEP HEALTH, 6(3), 277-287. https://doi.org/10.1016/j.sleh.2019.10.008