18F-fluorodeoxyglucose positron emission tom ography/computed tomography in the assessment of occult primary head and neck cancers – an audit and review of published studies - Wong, W L; Sonoda, L I; Gharpurhy, A; Gollub, F; Wellsted, D; Goodchild, K (Clin Oncol (R Coll Radiol), 2012)
et al.