[1] MIT, George R Harrison Spect Lab, Laser Biomed Res Ctr, Cambridge, MA 02139 USA
[2] Brigham & Womens Hosp, Div Gastroenterol, Boston, MA 02115 USA
[3] Cleveland Clin Fdn, Dept Urol, Cleveland, OH 44106 USA
[4] New England Med Ctr, Boston, MA 02132 USA
[5] Childrens Hosp, Dept Pathol, Boston, MA 02115 USA
[6] Yale Univ, Sch Med, Dept Pathol, New Haven, CT 06520 USA
[7] Univ Hosp Cleveland, Dept Pathol, Cleveland, OH 44106 USA
[8] Case Western Reserve Univ, Cleveland, OH 44106 USA
[9] Cleveland Clin Fdn, Dept Pathol, Cleveland, OH 44106 USA
[10] US Vet Adm Hosp, W Roxbury, MA 02132 USA