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Colman G, Beighton D, Chalk AJ, Wake S.Colman G, et al. Among authors: chalk aj.Aust Dent J. 1976 Apr;21(2):111-8. doi: 10.1111/j.1834-7819.1976.tb02833.x.Aust Dent J. 1976.PMID: 1068665
Chalk AJ.Chalk AJ.Ann N Y Acad Sci. 1971 Oct;172(13):433-40. doi: 10.1111/j.1749-6632.1971.tb34951.x.Ann N Y Acad Sci. 1971.PMID: 5291218No abstract available.