Joel Ackerman became our chief financial officer on February 27, 2017 after serving as our senior vice president, finance from February 21, 2017 to February 26, 2017. Prior to joining us, Mr. Ackerman was the chief executive officer and a member of the board of directors of Champions Oncology, Inc., a company engaged in the development of advanced technology solutions and services to personalize the development and use of oncology drugs, since October 2010. Mr. Ackerman is currently the Chairman of Champions Oncology. Mr. Ackerman served as a managing director at Warburg Pincus, a global private equity firm, where he led the healthcare services team for 10 years from January 1999 to September 2008. He sits on the board of directors at Kindred Healthcare, Inc., a position he has held since December 2008, and previously served on the board of directors of Coventry Health Care, Inc. a national managed care company, from September 1999 until its acquisition by Aetna Inc. in May 2013. He is also chairman of the board of One Acre Fund, a not-for-profit organization that focuses on smallholder agriculture, and serves more than 700,000 subsistence farmers in Africa.