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. 2009 Jun 22;43(13):1041–1044. doi: 10.1136/bjsm.2009.058669

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© Strahm et al 2009

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Distribution of d13C values obtained for etiocholanolone (Etio), androsterone (A), 16(5α)-androstenol (16EN) and 5β-pregnanediol (PD) in the urine specimens of the top-level soccer players residing in the six surveyed countries.