1. Laboratory of Molecular Biology; National Institute of Diabetes and Digestive and Kidney Diseases; National Institutes of Health, Bethesda; MD; USA
2. Faculdade de Ciências de Lisboa; Universidade de Lisboa; BioFIG; Lisbon; Portugal
3. Division of Immunology and Infectious Disease; Queensland Institute of Medical Research; Brisbane; Australia
4. Skaggs Institute for Chemical Biology and Department of Molecular Biology; The Scripps Research Institute; La Jolla; CA; USA