Complex sentence: Retired from clinical practice in 1999, he returned to Canada and created the Trout Research & Education Centre, where he reads, researches, writes and teaches about randomized clinical trials, and also, with Sharon Straus, the definitive guide about mentorship for clinician scientists.
Split into simpler sentences: Retired from clinical practice in 1999, he returned to Canada and created the Trout Research & Education Centre, where he read, researched, wrote and teached about randomized clinical trials. He also authored, with Sharon Straus, the definitive guide about mentorship for clinician scientists.