[1] Univ Med Ctr Gottingen, Inst Med Microbiol, Kreuzbergring 57, D-37075 Gottingen, Germany
[2] Univ Castilla La Mancha, Reg Ctr Biomed Res, Castilla La Mancha Sci & Technol Pk, Albacete 02008, Spain
[3] Univ Pais Vasco UPV EHU, Sch Med & Nursing, Dept Immunol Microbiol & Parasitol, Bilbao 48940, Spain