Authors: Hayashi, Y.; Hoashi, E.; Nara, T.
Source: Early Human Development, Volume 49, Number 1, 24 July 1997, pp. 33-38(6)
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Document Type: Research Article
Department of Pediatrics, Tokyo Jikeikai University of Medicine, Nishishinbasi 3-25-8, Minatoku, Tokyo, Japan
Publication date: July 24, 1997