Islamabad has the lowest rate of infant mortality in the country at 38 deaths per thousand compared to the national average of 78 deaths per thousand. Islamabad has both public and private medical centres. The largest hospital in Islamabad is Pakistan Institute of Medical Sciences (PIMS) hospital. It was established in 1985 as a teaching and doctor training institute. PIMS functions as a National Reference Center and provides specialised diagnostic and curative services. The hospital has 30 major medical departments. PIMS is divided into five administrative branches. Islamabad Hospital is the major component with a 592-bed facility and 22 medical and surgical specialties.