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
Ervin CM, Mangel AW. Clinical trials in irritable bowel syndrome: a review. Rev Recent Clin Trials. 2013 Mar 1;8(1):9-22.
Xu J, Evans J, Coon C, Copley-Merriman K, Su Y. Measuring patient-reported outcomes in advanced gastric cancer. Ecancermedicalscience. 2013;7:351. doi: 10.3332/ecancer.2013.351.
Carrera G, Garcia-Albeniz X, Ayuso JR, Aparicio J, Castells A, Codony-Servat J, Feliu J, Fuster D, Gallego R, Pages M, Torres F, Maurel J. Design and endpoints of clinical and translational trials in advanced colorectal cancer. a proposal from GROUP Español Multidisciplinar en Cancer Digestivo (GEMCAD). Rev Recent Clin Trials. 2011 May;6(2):158-70. doi: 10.2174/157488711795177868