PorterA.M.W.Do some marathon runners bleed into the gut?BMJ1983; 287: 1427
4.
StewartJ.G., AhlquistD.A., McgillD.B., IlstrupD.M., SchwartzS., OwenR.A.Gastrointestinal blood loss and anaemia in runners. Ann Intern Med1984; 100: 843–5
5.
McMahonL.F., RyanM.J., LarsonD., FisherR.L.Occult gastrointestinal blood loss in marathon runners. Ann Intern Med1984; 100: 846–7
6.
FogorosR.N.Runner's Trots. Gastrointestinal disturbances in runners. JAMA1980; 243: 1743–4
7.
HeerM., RepondF., HanyA., SulserH., KehlO., JägerK.Acute ischaemic colitis in a female long distance runner. Gut1987; 28: 896–9
8.
HurwitzR.L., MartinA.J., GrossmanB.E., WaddellW.R.Oral contraceptives and gastrointestinal disorders. Ann Surg1970; 172: 892–6
9.
CottonP.B., ThomasM.L.Ischaemic colitis and the contraceptive pill. BMJ1971; 3: 27–8