Pungpapong, G. and Kalayasiri, R. 2022. Depression and Anxiety Plus Levels of Stress among Secondary School Students during the COVID-19 Lockdown: an Online Cross- Sectional Survey. Journal of Health Science and Medical Research. 40, 2 (Mar. 2022), 157–171. DOI:https://doi.org/10.31584/jhsmr.2021824.