In 1971, Welsh was named the David Ross Boyd Professor of Medicine at the University of Oklahoma Health Sciences Center. He taught hundreds of aspiring doctors, instilling in them a love of learning, Guild said.
He retired in 1990 after several years of researching the gastrointestinal system, including his studies on malabsorption, inflammatory bowel disease and endoscopic evaluation of gastrointestinal bleeding associated with peptic ulcer disease.
“He was unique in his approach to medicine,” Guild said. “He was the guy that you knew was going to be in his office at 7 o'clock at night, and if you had a question, you just went to his office, and he was there, and he was happy to take time (to) stop and talk to you.”View/sign the guest book