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	1.	[Regional differences in infant mortality, 1961-1964]. [electronic resource] by Backer, J E Producer: 19671120 In: Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke vol. 87 Availability: No items available. Save to lists Add to cart (remove)
	2.	[Perinatal mortality in relation to duration of pregnancy and weight of infant at birth]. [electronic resource] by Backer, J E Producer: 19690131 In: Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke vol. 88 Availability: No items available. Save to lists Add to cart (remove)
	3.	Infant mortality problems in Norway. [electronic resource] by Backer, J E Aagenaes, O Producer: 19680112 In: Vital and health statistics. Series 3, Analytical studies no. 8 Availability: No items available. Save to lists Add to cart (remove)
	4.	[Sleep disorders during midwinter in the far north]. [electronic resource] by DEVOLD, O BARLINHAUG, E BACKER, J E Producer: 20000701 In: Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke vol. 77 Availability: No items available. Save to lists Add to cart (remove)

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