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2. Psychophysiologic effects in the neonate of prone sersus supine placement;Brackbill, Y.; Douthitt, T.C.; West, H.;Pediatrics; Apneic spells and sleep states in preterm infants,1973
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5. Polvgraphic studies of the full-term newbosrn;Prechtl, H.F.R.;Pediatrics; Prolonged apnea and the sudden infant death syndrome: clinical and laboratory observations,1968