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
McElroy LM, Daud A, Davis AE, Lapin B, Baker T, Abecassis MM, Levitsky J, Holl JL, Ladner DP. A meta-analysis of complications following deceased donor liver transplant. Am J Surg. 2014 Oct;208(4):605-18. doi: 10.1016/j.amjsurg.2014.06.006