Of the 37 100% studies analyzed, 25 67.6% were retrospective studies, seven 18.9% were case studies, three 8.1% were prospective, one 2.7% was a cohort study and one 2.7% a literature review.
De los 37 100% artículos analizados, 25 67,6% eran estudios retrospectivos, 7 18,9% estudios de caso, 3 8,1% prospectivos, 1 2,7% de cohorte, y 1 2,7% de revisión bibliográfica.
Dos 37 100% artigos analisados, 25 67,6% eram estudos retrospectivos, 7 18,9% estudos de caso, 3 8,1% prospectivos, 1 2,7% coorte e 1 2,7% revisão da literatura.