Neighbourhood green space, social environment and mental health: an examination in four European cities.

Ruijsbroek, A., Mohnen, S.M., Droomers, M., Kruize, H., Gidlow, C., Grazuleviciene, R., Andrusaityte, S., Helbich, M., Maas, J., Nieuwenhuijsen, M.J., Triguero-Mas, M., Masterson, D., Ellis, N., Kempen, E. van, Hardyns, W., Stronks, K., Groenewegen, P.P. Neighbourhood green space, social environment and mental health: an examination in four European cities. International Journal of Public Health: 2017, 62(6), 657-667