Our division provides consultative and epidemiological services for the Morgan Stanley Children's Hospital of New York-Presbyterian, serving both inpatient and outpatient areas. Our patients come from both the local community as well as those referred to Columbia for complicated underlying conditions such as complex congenital heart disease, solid organ transplantation, malignancies, BMT and stem cell transplantation, autoimmune and immunological disorders and the many patients who require intensive care, both neonates and older children. We have an active HIV/AIDS unit and are involved in HIV management and clinical trials in patients here and abroad.