Sourtzi, Panayota, Vasiliki Roka, Venetia-Sofia Velonaki, and Athena Kalokerinou. 2010. “Health Promotion Programs for the Elderly in Greece, the ‘Health Pro Elderly’ Project”. Hygiea Internationalis: An Interdisciplinary Journal for the History of Public Health 9 (1):385-95. https://doi.org/10.3384/hygiea.1403-8668.1091385.