Complex sentence: In 1992, he became the Dickinson Richards Professor of Medicine at the Columbia University College of Physicians and Surgeons, where he founded and led the Division of Circulatory Physiology for 12 years.
Split into simpler sentences: In 1992, he became the Dickinson Richards Professor of Medicine at the Columbia University College of Physicians and Surgeons. There he founded and led the Division of Circulatory Physiology for 12 years.