Oral cavity squamous cell carcinoma: factors related to occult lymph node metastasis - d'Alessandro, André Fernandes; Pinto, Fábio Roberto; Lin, Chin Shien; Kulcsar, Marco Aurélio Vamondes; Cernea, Cláudio Roberto; Brandão, Lenine Garcia; Matos, Leandro Luongo de (Brazilian Journal of Otorhinolaryngology, 2015)