OHYAMA Yoko¹, ISHIDA Hideaki², NAGANUMA Hiroko³, HOSHINO Takao⁴ (1.Department of Medical Laboratory, Akita Kousei Medical Center, 2.Department of Ultrasound Center, Akita Red Cross Hospital, 3.Department of Gastenterology, Yokote Municipal Hospital, 4.Depatment of Gastroentroligy, Akita Kousei Medical Center)

NISHIDA Mutsumi^{1, 2} (1.Diagnostic Center for Sonography, Hokkaido University Hospital, 2.Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital)

TSUJIMOTO Fumio^{1, 2}, SAKURAI Masaru³, IGARASHI Gaku¹, NOBUOKA Hirohiko¹ (1.Department of Laboratory Medicine, St.Marianna University School of Medicine, 2.Center of preventive medicine, Nomura Hospital, 3.Ultrasound Center, St.Marianna University Hospital)

MORI Hideaki (the Third Department of Internal Medicine, Kyorin University School of Medicine)

SEKINE Tomoki (Department of Clinical Services, Asahi General Hospital)