[1] Seoul Natl Univ, Bundang Hosp, Dept Surg, Coll Med, Seongnam 82,Gumi Ro 173 Beon Gil, Seongnam Si 13620, South Korea
[2] Univ N Carolina, Div Gastroenterol & Hepatol, Dept Med, 130 Mason Farm Rd CB 7080, Chapel Hill, NC 27599 USA
[3] Weill Cornell Med, New York Presbyterian Hosp, Ctr Adv Digest Care, 1305 York Ave,4th Floor, New York, NY 10021 USA
[4] Washington Univ, Sect Transplantat, Dept Surg, 1 Barnes Hosp Plaza, St Louis, MO 63110 USA
[5] Univ Cattolica Sacro Cuore, Digest Endoscopy Unit, Gemelli Hosp, Largo Agostino Gemelli 8, I-00168 Rome, RM, Italy
[6] Hosp Italiano Buenos Aires, Dept Surg, Juan D Peron 4190,C1181ACH CABA, Buenos Aires, DF, Argentina
[7] Natl Inst Med Sci & Nutr, Dept Surg, Vasco de Quiroga 15 Col Secc 16, Mexico City 14000, DF, Mexico
[8] Univ Edinburgh, Clin Surg, Royal Infirm, 51 Little France Crescent, Edinburgh EH16 4SA, Midlothian, Scotland
[9] Univ Amsterdam, Fac Med AMC, Dept Surg, Sweelincklaan 15, NL-1217 CK Hilversum, Netherlands
[10] Massachusetts Gen Hosp, Dept Surg, White 506,55 Fruit St, Boston, MA 02114 USA
[11] Washington Univ, Dept Med, Div Gastroenterol, Campus Box 8124 660 S Euclid Ave, St Louis, MO 63110 USA
[12] Flinders Med Ctr, Dept Surg, Flinders Dr, Bedford Pk, SA 5042, Australia
[13] Flinders Univ S Australia, Flinders Dr, Bedford Pk, SA 5042, Australia
[14] Washington Univ, Sch Med, Mallinckrodt Inst Radiol, 510 South Kingshighway Blvd, St Louis, MO 63110 USA
[15] Temple Univ, Lewis Katz Sch Med, Dept Surg, 3509 N Broad St,Boyer Pavil,E 938, Philadelphia, PA 19140 USA
[16] Indiana Univ Hlth, Univ Hosp, Dept Med, Div Digest & Liver Disorders, 550 North Univ Blvd,Suite 1634, Indianapolis, IN 46202 USA
[17] Univ Penn, Hosp Univ Penn, Perelman Sch Med, Div Intervent Radiol, Silverstein 1st Floor,3400 Spruce St, Philadelphia, PA 19104 USA
[18] Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden
[19] Washington Univ, Sect HPB Surg, 1 Barnes Hosp Plaza, St Louis, MO 63110 USA