[1] Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan, Peoples R China
[2] Univ Copenhagen, Panum Inst, Dept Mol & Cellular Med, DK-1168 Copenhagen, Denmark
[3] Univ Copenhagen, Herlev Hosp, Med Sect, Gastroenterol Unit, DK-2730 Herlev, Denmark