Fig. 1From: HLA-B*57:01 screening and hypersensitivity reaction to abacavir between 1999 and 2016 in the OPERA® observational database: a cohort studySelection of eligible patients for analysis. 1As of July 31, 2016, 2Pre-screening period: 01 Jan 1999 to 14 June 2008, 3Post-screening period: 15 June 2008 to 31 July 2016Back to article page