[1] Hosp Univ Fe, Ctr Invest, Univ Microbiol Expt, Valencia 46009, Spain
[2] Hosp Univ Fe, Microbiol Serv, Valencia 46009, Spain
[3] Hosp Univ Ramon & Cajal, Madrid, Spain
[4] Hosp Univ Basurto, Bilbao, Spain
[5] Univ Lozano Blesa, Hosp Clin, Zaragoza, Spain
[6] Hosp Univ Valme, Seville, Spain