radiation epidemiology cohort Portuguese Tinea Capitis Cohort Paul Schofield Boaventura P et al., Lancet Infect Dis. 2011;11(3):163-4 The Portuguese Tinea Capitis Cohort follows individuals who received low-dose-rate X-ray irradiation to the head in childhood for tinea capitis treatment, enabling long-term evaluation of radiation effects including head and neck pathologies such as thyroid abnormalities and central nervous system tumours. The associated biobank holds blood DNA (400 cases), oral mucosa cells, lymphocytes, plasma and serum from 1,375 cases. The cohort provides valuable data on the late effects of childhood low-dose-rate head irradiation. Located at Ipatimup.