1
Department of Surgery, Hospital Universitario San Jorge, 22004 Huesca, Spain
2
Department of Surgery, Hospital General Universitario Dr. Balmis, 03010 Alicante, Spain
3
ISABIAL, 03010 Alicante, Spain
4
Department of Surgery, School of Medicine, Miguel Hernández University, 03202 Alicante, Spain
5
Department of Surgery, Hospital General Universitario de Elda, 03600 Alicante, Spain
6
Department of Surgery, Hospital Universitario de Bellvitge, 08907 Barcelona, Spain
7
Department of Surgery, Hospital Universitario de Donostia, 20014 San Sebastián, Spain
8
Department of Surgery, Hospital Universitario Marqués de Valdecilla, 39008 Santander, Spain
9
Department of Surgery, Clínica Universidad de Navarra, 31008 Pamplona, Spain
10
Department of Surgery, Hospital Universitario Virgen del Rocío, 41013 Sevilla, Spain
11
Department of Surgery, Hospital Clínico Universitario, University of Valencia, Biomedical Research Institute, 46010 Valencia, Spain
12
Department of Surgery, Hospital Insular de Gran Canaria, 35016 Las Palmas, Spain
13
Department of Surgery, Hospital Universitario Río Hortega, 47012 Valladolid, Spain
14
Department of Surgery, Hospital Universitario German Trias i Pujol, 08916 Badalona, Spain
15
Department of Surgery, Hospital Regional Universitario, 29010 Málaga, Spain
16
Department of Surgery, Hospital Universitario Doce de Octubre, 28041 Madrid, Spain
17
Department of Surgery, Hospital Mutua de Tarrasa, 08221 Tarrasa, Spain
18
Department of Surgery, Hospital Universitario Santa Creu i Sant Pau, 08025 Barcelona, Spain
19
Department of Surgery, Hospital Universitario de Badajoz, 06080 Badajoz, Spain
20
Department of Surgery, Hospital Universitario Doctor Peset, 46017 Valencia, Spain
21
Department of Surgery, Hospital Universitario de Basurto, 48013 Bilbao, Spain
22
Department of Surgery, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
23
Department of Surgery, Hospital Universitario Virgen de las Nieves, 18014 Granada, Spain
24
Department of Surgery, Complejo Hospitalario Universitario de Vigo, 36312 Vigo, Spain
25
Department of Surgery, Hospital General Universitario de Albacete, 02008 Albacete, Spain
26
Department of Surgery, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
27
Department of Surgery, Hospital Universitario de A Coruña, 15006 A Coruña, Spain
28
Department of Surgery, Hospital Universitario Nuestra Señora de la Candelaria, 38010 Tenerife, Spain
29
Department of Surgery, Hospital Universitario Dr. Josep Trueta, 17007 Girona, Spain
30
Department of Surgery, Hospital Universitario Príncipe de Asturias, 28805 Alcalá de Henares, Spain
31
Department of Surgery, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain
32
Department of Surgery, Hospital del Mar, 08003 Barcelona, Spain
33
Department of Surgery, Hospital Universitario de Getafe, 28905 Getafe, Spain
34
Department of Surgery, Hospital Universitario Arnau de Vilanova, 25198 Lleida, Spain
35
Department of Surgery, Hospital Universitario Infanta Leonor, 28031 Madrid, Spain
36
Department of Surgery, Hospital Universitario Morales Meseguer, 30008 Murcia, Spain
37
Department of Surgery, Hospital Universitario La Luz, 28003 Madrid, Spain
38
Department of Surgery, Hospital Universitario Puerta del Mar, 11009 Cádiz, Spain
39
Department of Surgery, Hospital General Universitario de Ciudad Real, 13005 Ciudad Real, Spain
40
Department of Surgery, Hospital General de Valencia, 46014 Valencia, Spain
41
Department of Surgery, Hospital Royo Villanova, 50015 Zaragoza, Spain
42
Department of Surgery, Hospital Clínico de San Carlos, 28040 Madrid, Spain
43
Department of Surgery, Hospital Universitario de Elche, 03203 Elche, Spain
44
Department of Surgery, Hospital Universitario Salamanca, 37007 Salamanca, Spain
45
Department of Surgery, Hospital Clínico de Valladolid, 47007 Valladolid, Spain
46
Instituto de Investigación Biosanitaria ibs.GRANADA, School of Medicine, University of Granada, 18016 Granada, Spain
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
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