Pius Kamau, who contributed "A Duty to Heal" to NPR's This I Believe series, is a thoracic and general surgeon in Denver. He grew up in Kenya and studied medicine in Kenya, Spain a...ver maisPius Kamau, who contributed "A Duty to Heal" to NPR's This I Believe series, is a thoracic and general surgeon in Denver. He grew up in Kenya and studied medicine in Kenya, Spain and England before immigrating to the United States. Kamau also writes a column on African issues for the Denver Post.ver menos