1. Protein Studies Program, Oklahoma Medical Research FoundationOklahoma CityOklahomaUSA
2. Department of Chemistry and Medicinal ChemistryPurdue UniversityWest LafayetteInidanaUSA
3. Leibniz Institute for Natural Product Research and Infection BiologyHans Knoell InstituteJenaGermany
4. Laboratoire de MycologieCentre Hospitalier Universitaire VaudoisLausanneSwitzerland