Khazaei, H., Komasi, S., Zakiei, A., Rezaei, M., Hatamian, P., Jashnpoor, M., & Saeidi, M. (1969). Design and standardization of tools for assessing the perceived heart risk and heart health literacy in Iran. Annals of Cardiac Anaesthesia, 21(1), 46-52. https://doi.org/10.4103/aca.ACA_136_17 (Original work published 1969)