Ricci, S. 2013. Comment to: Spray-applied cell therapy with human allogeneic fibroblasts and keratinocytes for the treatment of chronic venous leg ulcers: a phase 2, multicentre, double-blind, randomized, placebo-controlled trial, Kirsner RS et al. Lancet 2012;380:977-8. Veins and Lymphatics. 2, 1 (Dec. 2013), 8. DOI:https://doi.org/10.4081/ByblioLab.2013.8.