This is your employment contract <a href=" http://www.indoorutrecht.nl/index.php/avanafil-solubility.pdf ">avanafil impurities</a> LONDON, July 31 (Reuters) - European shares edged lower onWednesday as a fall in German retail sales dented sentiment,while investors were reluctant to add big equity positionsahead of a U.S. Federal Reserve policy announcement later in theday.