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Chan AT, Ho S, Teo PM, Law V, Tjong J, Yu P, Chang AR, Kwan WH, Leung WT, Johnson PJ.Chan AT, et al.Eur J Cancer B Oral Oncol. 1996 Jan;32B(1):50-4. doi: 10.1016/0964-1955(95)00057-7.Eur J Cancer B Oral Oncol. 1996.PMID: 8729619