Skin vasodilation and analgesic effect of a topical nitric oxide-releasing hydrogel - Vercelino, Rafael; Cunha, Thiago Mattar; Ferreira, Elisa Silva; Cunha, Fernando de Queiroz; Ferreira, Sérgio Henrique; Oliveira, Marcelo Ganzarolli de (Journal of Materials Science: Materials in Medicine, 2013)