Gascon M, Cirach M, Martinez D, Dadvand P, Valentin A, Plasencia A, Nieuwenhuijsen MJ. Normalized difference vegetation index (NDVI) as a marker of surrounding greenness in epidemiological studies: the case of Barcelona city. Urban For Urban Green. 2016 Sep;19:88-94. doi: 10.1016/j.ufug.2016.07.001
Yopp JM, Park EM, Edwards T, Deal A, Rosenstein DL. Overlooked and underserved: widowed fathers with dependent-age children. Palliat Support Care. 2015 Oct;13(5):1325-34. doi: 10.1017/S1478951514001321