Johnson, A. and Valsan, S.M. 2019. Role of sleep on alertness among medical students from a tertiary care hospital, Thrissur district, Kerala: cross-sectional study. International Journal Of Community Medicine And Public Health. 6, 7 (Jun. 2019), 2867–2870. DOI:https://doi.org/10.18203/2394-6040.ijcmph20192816.