Mordin M, Parrish W, Masaquel C, Bisson B, Copley-Merriman K. Intra-articular hyaluronic acid for osteoarthritis of the knee in the United States: a systematic review of economic evaluations. Clin Med Insights Arthritis Musculoskelet Disord. 2021 Nov 19;14:1-13. doi: 10.1177/11795441211047284
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