Correspondence to M. Kaszkin, Pharmacentrum Frankfurt, Keinikum der J. W. Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany kaszkin@em.uni-frankfurt.de)
An ethnopharmacological survey was used to compare the medicinal plants most frequently recommended by herbalists, naturopaths, and other traditional practitioners in Moroccan and Canadian socio-economical settings. Striking differences in traditional pha