Joel Ackerman became our chief financial officer in March 2017. Prior to joining us, Mr. Ackerman was the chief executive officer 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, from October 2010 to January 2017. Mr. Ackerman has served as a member of the board of directors of Champions Oncology since October 2010, and as its non-executive chairman since January 2017. Mr. Ackerman is also a founder of and investor in Guidon Partners LP, a private equity firm with a primary focus on health care services, founded in November 2014. From January 1999 to September 2008, he was managing director at Warburg Pincus, a global private equity firm, where he led the health care services team for approximately 10 years. Mr. Ackerman sits on the board of directors of Kindred Health care, 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 the One Acre Fund, a not-for-profit microfinance organization that focuses on smallholder agriculture, and serves more than 400,000 subsistence farmers in Africa.