1. Institut de Pharmacognosie et Phytochimie, Ecole de Pharmacie, Université de Lausanne, B.E.P., CH-1015, Lausanne, Switzerland
2. Laboratoire de Mycologie, Service de Dermatologie, Centre Hospitalier Universitaire Vaudois (C.H.U.V.), CH-1011, Lausanne, Switzerland
3. School of Pharmacy, University of Panama, Apartado 10767, Estafeta Universitaria, Panama, R of Panama
4. Herbarium of the University of Panama Smithsonian Tropical Research Institute, Panama
5. Instituto Universitario de Bioorganica “Antonio Gonzàlez”, Universidad de la Laguna, Tenerife, Spain