What is the fine-grained topic of the following text: Hegde PU buy modafinil in china Brenski AC, Caldarelli DD, Hutchinson J, Panje WR, Wood NB, Leurgans S,Preisler HD, Taylor SG 4th et al (1998) Tumor angiogenesis and p53 mutations: prognosis inhead and neck cancer. Only return the topic.
The prognosis of head and neck cancer in relation to tumor angiogenesis and p53 mutations.