1. Department of Physiology and PharmacologyKarolinska InstitutetStockholmSweden
2. Institute for Clinical Chemistry and Laboratory MedicineUniversity Medical Center Hamburg-EppendorfHamburgGermany
3. Department of Clinical SciencesLund UniversityLundSweden
4. Biotechnology CenterButantan InstituteSao PauloBrazil
5. Institute of Biochemistry IIGoethe UniversityFrankfurtGermany