[1] IIS Gregorio Maranon, Madrid, Spain
[2] IVO, New Delhi, India
[3] Hop Ctr Valencia, Valencia, Spain
[4] Hop Univ La Fe, Valencia, Spain
[5] Hop Univ Basurto, Bilbao, Spain
[6] Hop Gen Univ Miguel Servet, Zaragoza, Spain
[7] Ctr Hosp Virgen de la Victoria, Malaga, Spain
[8] Hop Ctr Univ Lozano Blesa, Zaragoza, Spain
[9] Hop Univ Arnau de Vilanova, Barcelona, Spain
[10] Hop Univ Canarias, Las Palmas Gran Canaria, Spain
[11] Ctr Hosp Reina Sofia, Cordoba, Argentina
[12] Hop Univ Marques de Valdecilla, Cantabria, Spain
[13] Ctr Osped Juan Canalejo, La Coruna, Spain
[14] ISCIII, Madrid, Spain
[15] GEICAM, Madrid, Spain