Affiliation: | 1. Hospital Reina Sofía Tudela, Tudela, Navarra, Spain;2. Hospital Perpetuo Socorro, Alicante, Spain;3. Hospital Valle del Nalón, Langreo, Asturias, Spain;4. Hospital Casa de Salud, Valencia, Spain;5. Zaragoza University, Zaragoza, Spain;6. Hospital General, Segovia, Spain |