Tanimura Masako, Okuma Kanako, Kyoshima Kayoko
Department of Child and Maternal Health, National Research Institute for Child Health and Development, 2-10-1, Okura, Setagaya-ku, Tokyo 157-8535, Japan.
Arch Pediatr Adolesc Med. 2007 Jun;161(6):618-9. doi: 10.1001/archpedi.161.6.618-b.