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Scientific Advisory Board

Bergein F. Overholt, M.D., Chairman

  • Developer of the flexible fiberoptic sigmoidoscope and colonoscope.
  • Established the first endoscopic ambulatory surgery center in the USA.
  • Developed photodynamic therapy for Barrett’s esophagus.
  • Awarded Mastership by the American College of Physicians & American College of Gastroenterology.
  • Past President American Society of Gastrointestinal Endoscopy.

Herbert A. Fritsche, Ph.D.

  • Retired, Tenured Professor & Chief of Clinical Chemistry; MD Anderson Cancer Center (1969-2010).
  • Over 200 peer reviewed manuscripts, book chapters & invited articles. Holder of five patents.
  • Member of Editorial Board for 12 scientific journals & coeditor of book “Tumor Markers” AACC Press.
  • Member Tumor Marker Guideline Committees for ASCO and Natl Academy for Clinical Biochemistry.
  • Awards: Johnson & Johnson –Outstanding Research Contributions; AACC Morton Schwartz-Research in Cancer Diagnostics; Carl Jolliff and Morton Schwartz Lifetime Achievement Awards in Immunology and Cancer.