JOINT FILING AGREEMENTJoint Filing Agreement • April 4th, 2013 • Discovery Group I, LLC • Services-medical laboratories
Contract Type FiledApril 4th, 2013 Company IndustryDISCOVERY GROUP I, LLC, for itself and as general partner of DISCOVERY EQUITY PARTNERS, L.P. By Michael R. Murphy* Michael R. Murphy Managing Member Daniel J. Donoghue* Daniel J. Donoghue Michael R. Murphy* Michael R. Murphy *By: /s/ Mark Buckley Mark Buckley Attorney-in-Fact for Daniel J. Donoghue Attorney-in-Fact for Michael R. Murphy