[1] Fox Chase Canc Ctr, Canc Biol Program, 7701 Burholme Ave, Philadelphia, PA 19111 USA
[2] Fox Chase Canc Ctr, Histopathol Facil, 7701 Burholme Ave, Philadelphia, PA 19111 USA
[3] Univ Penn, Dept Med, Pulm Allergy & Crit Care Div, Perelman Sch Med, Philadelphia, PA 19104 USA
[4] Univ Vermont, Coll Med, Dept Pathol, Burlington, VT 05405 USA