In 1946, the Pratt Diagnostic Clinic, an extension of the Boston Dispensary established in 1938, joined NEMC. In 1950, when the Medical School and Dental School relocated to Harrison Avenue, the NEMC became known as the New England Medical Center Hospital. The name of the institution changed to the Tufts New England Medical Center (T-NEMC) in 1968, to New England Medical Center in the 1980s, back to T-NEMC in 2002, and ultimately to the Tufts Medical Center in 2008. Over the years, the governing boards of Tufts University and the medical center negotiated a series of affiliation agreements. Tufts University and Tufts Medical Center are separate corporate entities. However, the president and several other senior officers of Tufts University are "ex officio" members of the board of directors of the Medical Center.