[1] Johns Hopkins Med Inst, Sol Goldman Pancreat Canc Res Ctr, Dept Pathol, Baltimore, MD 21205 USA
[2] Johns Hopkins Med Inst, Sol Goldman Pancreat Canc Res Ctr, Dept Oncol, Baltimore, MD 21205 USA
[3] Johns Hopkins Med Inst, Sol Goldman Pancreat Canc Res Ctr, Inst Genet Med, Baltimore, MD 21205 USA
[4] Johns Hopkins Med Inst, Sol Goldman Pancreat Canc Res Ctr, Dept Gastroenterol, Baltimore, MD 21205 USA