Inclusion period (February 7, 2012 to February 9, 2013) Follow-up period (March 7, 2012 to May 7, 2014) Period of phenotypic analysis of samples (7 February 2012 to May 7, 2014) Period molecular analysis of samples (7 February 2012 to May 7, 2014) Analysis of results (Winter 2013-2014) Publication of results (second half of 2014)