Azimkhani, Amin, Habib Honari, Mutlu Türkmen, Javad Gholamian, Vahid Saatchian, and Reyhane Salari. 2021. “Investigating the Role of Social Functions of Parks on Adherence to Physical Activity of Elderly People During an Epidemic Disease (COVID-19)”. Progress in Nutrition 23 (3): e2021093. https://doi.org/10.23751/pn.v23i3.10069.