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3. Apnea recordings of healthy infants at 40, 44, and 52 weeks postconception;M, Stein I.;Pediatrics,1979
4. Prolonged apnea and the sudden infant death syndrome. clinical and laboratory observations;Steinschneider, A.;Pediatrics,1972
5. Apneas during sleep in infants: possible relationship with sudden infant death syndrome;Guilleminault, C.; Peraita, R.; Souquet, M.; C, Dement W.;Science,1975