[1] Virgen De La Arrixaca Univ Hosp, Gen Surg Serv, Murcia, Spain
[2] Inst Murciano Invest Biosanit IMIB Arrixaca, Murcia, Spain
[3] Univ Murcia, Sch Med, Dept Surg Pediat Gynecol & Obstet, Murcia, Spain
[4] Univ Murcia, Fac Commun & Documentat, Murcia, Spain
[5] Crta Madrid Cartagena S-N, El Palmar 30120, Murcia, Spain