Sixty-One Questions and Answers for New Knowledge and New Thinking in the Twenty-First Century: The Past, Present, and Future of Humankind; The Challe

Charles H. Chen, MD is a board-certified obstetrician/gynecologist who has been in private practice in southern California for over thirty years. He was chairman of the OB/GYN department in a mid-size regional hospital in southern California. He has been very involved in the health care system in the United States.