Assessing the cost-effectiveness of COVID-19 vaccines in a low incidence and low mortality setting: the case of Thailand at start of the pandemic by Wang, Y, Luangasanatip, N, Pan-Ngum, W, Isaranuwatchai, W, Prawjaeng, J, Saralamba, S, Painter, C, Briones, JR, Teerawattananon, Y