Penn's research tradition has historically been complemented by innovations that shaped higher education. In addition to establishing the first medical school, the first university teaching hospital, the first business school, and the first student union, Penn was also the cradle of other significant developments. In 1852, Penn Law was the first law school in the nation to publish a law journal still in existence (then called "The American Law Register," now the "Penn Law Review", one of the most cited law journals in the world). Under the deanship of William Draper Lewis, the law school was also one of the first schools to emphasize legal teaching by full-time professors instead of practitioners, a system that is still followed today. The Wharton School was home to several pioneering developments in business education. It established the first research center in a business school in 1921 and the first center for entrepreneurship center in 1973 and it regularly introduced novel curricula for which "BusinessWeek" wrote, "Wharton is on the crest of a wave of reinvention and change in management education".