Critically review the following controversial paper published (and later retracted) by Wakefield et al, which implicated MMR vaccine as a possible etiologic contributor to Autism, etc. You may use either version for your review. Describe potential sources of bias and other limitations in the study: Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children A J Wakefield, S H Murch, A Anthony, J Linnell, D M Casson, M Malik, M Berelowitz, A P Dhillon, M A Thomson, P Harvey, A Valentine, S E Davies, J A Walker-Smith The Lancet, Volume 351, Number 9103 28 February 1998 Pro 7 Con Arguments: “Should any vaccines be required for children? Retrieved from http://vaccines.procon.org/ on November 5, 2013