TY - CONF A1 - Sporkert, F. A1 - Becker, Roland A1 - Lo, I. T1 - Results of the 2011 Ethyl Glucuronide and FAEE Proficiency Test T2 - 17th Meeting of the Society of Hair Testing T2 - 17th Meeting of the Society of Hair Testing CY - Toronto, Canada DA - 2012-06-25 PY - 2012 AN - OPUS4-26149 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -