Putra, R.P., Ramadhanti, A., Puhka, P. and Annemari, B. 2023. Male or Female, who is the highest? Life Optimism in Cardiovascular Disease Patients. World Psychology. 2, 2 (Aug. 2023), 143–160. DOI:https://doi.org/10.55849/wp.v2i2.373.