Changes in physical activity by context and residential greenness among recent retirees: Longitudinal GPS and accelerometer study, Pasanen, S., Halonen J. I., Gonzales-Inca C., Pentti J., Vahtera J., Kestens Y., Thierry B., Brondeel Ruben, Leskinen T., and Stenholm S. , Health & Place, Jan-01-2022, Volume 73, (2022)