Double-Blind Clinical Trial for Evaluating the Effectiveness and Tolerability of Ageratina pichinchensis Extract on Patients with Mild to Moderate Onychomycosis. A Comparative Study with Ciclopirox - Romero-Cerecero, Ofelia; Zamilpa, Alejandro; Jiménez-Ferrer, Jesús Enrique; Rojas-Bribiesca, Gabriela; Román-Ramos, Rubén; Tortoriello, Jaime (Planta Medica, 2008)