1. Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
2. Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, Denmark
3. Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín, Argentina
4. Department of Medicine, University of California, San Diego, CA 92122, USA