src: Sturgis e Miller, em artigo de revisão, concluem que o risco para o desenvolvimento de STP se mantém constante com o passar do tempo e esses tumores são a principal causa de falha no tratamento dos carcinomas epidermoides de VADS em estádio inicial.
tgt: Sturgis and Miller published a review and concluded that the risk of developing a second primary tumor is constant with time, and that these tumors are the main cause of failed treatments of upper aerodigestive tract initial stage squamous cell carcinomas.