[1] Macerata Hosp, Dept Surg, Macerata, Italy
[2] Univ Brescia, Dept Clin & Expt Sci, Brescia, Italy
[3] Maggiore Hosp, Emergency Surg, Bologna, Italy
[4] San Carlo Borromeo Hosp, Gen Surg & Polytrauma, Milan, Italy
[5] UNIVPM, Unit Hyg Prevent Med & Publ Hlth, Dept Biomed Sci & Publ Hlth, Ancona, Italy
[6] Bufalini Hosp, Dept Surg, Cesena, Italy
[7] Univ Hosp Birmingham NHS Fdn Trust, Gen Surg, Birmingham, W Midlands, England
[8] Mansoura Univ Hosp, Emergency Surg, Mansoura, Egypt
[9] Maggiore Univ Hosp, Emergency Surg Unit, Parma, Italy
[10] Kwara State Gen Hosp, Surg, Ilorin, Kwara, Nigeria
[11] Ahmadu Bello Univ, Teaching Hosp Zaria, Surg, Zaria, Nigeria
[12] First Univ Clin, Surg, Tbilisi, Georgia
[13] Baskent Univ, Adana Egitim Ve Uygulama Hastanesi, Gen Surg, Adana, Turkey
[14] Mustafa Kemal Univ, Training & Res Hosp, Gen Surg, Antakya, Turkey
[15] Sakarya Univ, Sch Med, Gen Surg, Sakarya, Turkey
[16] Primary Hlth Care Ctr Kissamos, Primary Care, Khania, Greece
[17] Med Univ Plovdiv, UMHAT Eurohosp, Dept Gen Surg, Plovdiv, Bulgaria
[18] Hadassah Med Ctr, Gen Surg, Jerusalem, Israel
[19] Agios Savvas Anticaner Hosp, Surg Dept, Athens, Greece
[20] Hosp Habib Bouguefa Bizerte, Gen Surg, Bizerte, Tunisia
[21] SS Annunziata Hosp, Gen Surg, Taranto, Italy
[22] Hosp San Juan Dios Serena, Surg, La Serena, Chile
[23] Ctr Hosp Sao Joao, Gen Surg, Porto, Portugal
[24] San Giovanni Bosco Hosp, Gen & Emergency Surg, Turin, Italy
[25] Gen Hosp Larissa, Surg Dept, Larisa, Greece
[26] Citta Castello Hosp, Chirurg, Citta Castello, Italy
[27] Univ Calif Los Angeles, Med Ctr, Dept Surg, Torrance, CA 90509 USA
[28] Univ Roma La Sapienza, DEA, Policlin Umberto 1, Rome, Italy
[29] Kuala Krai Hosp, Gen Surg, Kuala Krai, Kelantan, Malaysia
[30] Reg Hosp, Surg & Obstetr Gynaecol, Limbe, Cameroon
[31] Azienda Osped Univ, Policlin Paolo Giaccone, Emergency Surg, Palermo, Italy
[32] Univ Calif San Diego, Trauma Acute Care Surg, San Diego, CA 92103 USA
[33] Samsun Training & Res Hosp, Gen Surg, Samsun, Turkey
[34] EPE, CHVNG E, Surg, Vila Nova de Gaia, Portugal
[35] Ankara Numune Training & Res Hosp, Gen Surg, Adana, Turkey
[36] Univ Clin Ctr Tuzla, Clin Surg, Colorectal Surg, Tuzla, Bosnia & Herceg
[37] Kipshidze Cent Univ Hosp, Surg, Tbilisi, Georgia
[38] Hamad Gen Hosp, Surg, Doha, Qatar
[39] Riga East Univ Hosp Gailezers, Gen & Emergency Surg, Riga, Latvia
[40] Bahrain Def Force Hosp, Gen Surg, Manama, Bahrain
[41] ABC Med Sch, Trauma & Emergency Surg Div, Dept Gen Surg, Santo Andrei, SP, Brazil
[42] Hosp Garcia Orta, Gen Surg, Lisbon, Portugal
[43] Univ Campinas Unicamp, Hosp Clin, Div Trauma Surg, Campinas, SP, Brazil
[44] Vladimir City Clin Hosp Emergency Med, Dept Abdominal Surg, Vladimir, Russia
[45] Mansoura Univ, Fac Med, Dept Mansoura, Gen Surg, Mansoura, Egypt
[46] Hosp Univ Miguel Servet, Cirugia Gen & Aparato Digest, Zaragoza, Spain
[47] Natl & Kapodistrian Univ Athens, Aretaie Univ Hosp, Dept Surg 2, Athens, Greece
[48] Therezinha Jesus Univ Hosp, Surg, Juiz de Fora, Brazil
[49] Univ Hosp Birmingham NHS Fdn Trust, Upper GI Gen Surg, Birmingham, W Midlands, England
[50] Karadeniz Tech Univ, Farabi Hosp, Dept Gen Surg, Trabzon, Turkey