1. Freij BJ, Sever JL. Chronic infections. In: Avery GB, Fletcher MA, Macdonald MG, eds. Pathophysiology and Management of the Newborn, 4th edn. Philadelphia: JB Lippincott, 1994; 1029–50.
2. Introduction of New Vaccines in the National Vaccine Programmes. Washington, DC: Epidemiol Bull Pan American Health Org 1996; 17: 12–14.
3. Neonatal Manifestation of Congenital Rubella following an Outbreak in Trinidad