Effect of a plaster containing DHEP and heparin in acute ankle sprains with oedema: a randomized, double-blind, placebo-controlled, clinical study. Coudreuse, J.-M.; de Vathaire, F.. Current Medical Research and Opinion. 2010; 2221-2228: p.2221-2228. doi:10.1185/03007995.2010.508020Article