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Yusof, W.Z. (1990) Non-syndrome multiple supernumerary teeth: literature review. Journal (Canadian Dental Association), 56 (2). pp. 147-9. ISSN 0709-8936, DOI 2407326.
Yusof, W.Z. (1988) Periodontitis in children, adolescent and young adults. The changing concepts: 2. Aetiology and treatment. Singapore Dental Journal, 13 (1). pp. 4-9. ISSN 0377-5291, DOI 3155003.