[1] Univ Arizona, Coll Med, Dept Surg, 1501 North Campbell Ave,Room 5411,Tower 4, Tucson, AZ 85724 USA
[2] Atrium Hlth Wake Forest Baptist, Dept Surg, 1 Med Ctr Blvd, Winston Salem, NC 27157 USA
[3] Atrium Hlth Wake Forest Baptist, Dept Biostat & Data Sci, 1 Med Ctr Blvd, Winston Salem, NC 27157 USA
[4] Wake Forest Univ, Sch Med, Bowman Gray Ctr Med Educ, 475 Vine St, Winston Salem, NC 27101 USA
[5] Atrium Hlth Wake Forest Baptist, Dept Surg, 1 Med Ctr Blvd, Winston Salem, NC 27157 USA
[6] Atrium Hlth Wake Forest Baptist, Dept Internal Med, 1 Med Ctr Blvd, Winston Salem, NC 27157 USA