Children's Hospital of Pittsburgh of UPMC. Children's Hospital of Pittsburgh of UPMC rests on 10 acres in Pittsburgh's Lawrenceville neighborhood. The hospital saw nearly 80,000 emergency department visits and more than 1 million outpatient visits in fiscal year 2015. The hospital carries more than 120 years of history and in the early 1950s, the hospital provided University of Pittsburgh medical researcher Jonas Salk, MD, a clinical space to test his ideas. He subsequently developed the polio vaccination.