1. Morbidity and mortality of infants weighing less than 1,000 grams in an intensive care nursery;Alden;Pediatrics,1972
2. The long term prognosis for prematurely born children. A follow-up study of 999 boys born in wedlock and 1,002 controls;Alm;Acta Paediatrica (Uppsala),1953
3. Conduct of a controlled clinical trial;Atkins;British Medical Journal,1966
4. Pronostic vital et qualité de survie des prématurés pesant 1,500 et moins à la naissance, soignés en 1966-1968;Calame;Schweizerische Medizinische Wochenschrift,1972