Association of lymph vessel density with occult lymph node metastasis and prognosis in oral squamous cell carcinoma - Faustino, Simone Eloiza Sita; Tjioe, Kellen Cristine; Assao, Agnes; Pereira, Michele Conceição; Carvalho, André L.; Kowalski, Luiz Paulo; Oliveira, Denise Tostes (BMC Oral Health, 2021)