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2. The small baby, short-term and long-term prognosis;Kitchen;Med. J. Aust.,1978
3. Adams, J., and Rudolph, A.: Personal communication.
4. Premature Infants, A Manual for Physicians;Dunham,1948
5. Changing mortality rates with perinatal intensive care and regionalization;Usher;Semin. Perinatol.,1977