1. A clinicopathologic study of autopsy cases with oral malignant tumors;Okada;Odontology,1996
2. The relationship between histological malignancy grading and distant metastasis of primary oral and maxillofacial squamous cell carcinoma;Okada;J Jpn Stomatol Soc,1996
3. Review of the literature and a recommended system of malignancy grading in oral squamous cell carcinomas;Anneroth;Scand J Dent Res,1987
4. Clinicostatistical study on the cases for radical neck dissection in of squamous cell carcinoma of oral cavity;Yajima;Jpn J Oral Maxillofac Surg,1989
5. Depth of invasion as a predictive factor for cervical lymph node metastasis in tongue carcinoma;Fukano;Head Neck,1997