In One by One by One, Berkowitz traces what he learns and grapples with as a young doctor trying to bridge the gap between one of the world's richest countries and one of the world's poorest to make the first big save of his medical career.  As Janel and Berkowitz travel back and forth between the high-tech neurosurgical operating rooms of Harvard's hospitals and Janel's dirt-floored hut in rural Haiti, they face countless heart-wrenching twists and turns. Janel remains comatose for months after his surgery. It's not clear he will recover enough to return to Haiti and be able to survive there. So he goes for a second brain surgery, a third, a fourth. Berkowitz brings the reader to the front lines of global humanitarian work as he struggles to overcome the challenges that arise when well-meaning intentions give rise to unintended consequences, when cultures and belief systems clash, and when it's not clear what the right thing to do is, let alone the right way to do it. (HarperOne)

Aaron Berkowitz, MD PhD, is the founding Director of Global Health at Kaiser Permanente Medical School and was the founding Director of the Global Neurology Program at Brigham and Women’s Hospital in Boston and directed the first-year Mind-Brain-Behavior course at Harvard Medical School. As a consultant for Partners In Health and advisor to Doctors Without Borders, Dr. Berkowitz has worked in Haiti, Malawi, Vietnam, and on the Navajo reservation in New Mexico. He lives in Pasadena, CA.

Dr. Aaron Berkowitz discusses "One by One by One"