Małgorzata Dmochowska, Magdalena Wiśniewska, Paweł Jan Babiński, Zuzanna Karolina Jędrzejczak, Andrzej Józef Horabik, Julia Hertmanowska, Marta Piotrowska, Krzysztof Chmura, Adrianna Alicja Piekarska, & Gabriela Kryger. (2026). HEALTHCARE COSTS ACROSS THE BODY MASS INDEX SPECTRUM: THE ROLE OF AGE AND MULTIMORBIDITY — A SYSTEMATIC REVIEW. International Journal of Innovative Technologies in Social Science, (1(49). https://doi.org/10.31435/ijitss.1(49).2026.4773