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Sutherland, W.H.F., E.R Nye, D.J Macfarlane, M.C Robertson, and S.A Williamson. "Fecal Bile Acid Concentration in Distance Runners." International Journal of Sports Medicine 12, no. 6 (1991): S. 533-536.

Sutherland, W.H.F., et al. "Fecal Bile Acid Concentration in Distance Runners." International Journal of Sports Medicine 12.6 (1991): S. 533-536.