[1] ProMed Hlth Syst, Hepatobiliary & Pancreas Surg, Toledo, OH USA
[2] ProMed Hlth Syst, ProMed Canc Inst, Toledo, OH USA
[3] Univ Toledo, Coll Med, Dept Surg, 2801 W Bancroft St, Toledo, OH 43606 USA
[4] Carolinas Med Ctr, Hepatobiliary & Pancreas Surg, Charlotte, NC 28204 USA
[5] Ohio Hlth Riverside Methodist Hosptial, Columbus, OH USA