Author Title Journal ISSN Publisher Date Volume Number Page URL URL(DOI) MATSUMURA Kazuko Changes with Embryonic Development and Aging of Localization of Collagens and Fibronectin in the Skin The Hirosaki medical journal 04391721 Hirosaki University 1990-03-00 42 1 101-108 http://ci.nii.ac.jp/naid/110004770938/en/