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tumour. There is evidence that the number of patients who as NBCCS were included. The interviews were all conducted by P. W. develop more than one basal cell carcinoma (mBCC ) is increas- according to a specially designed form concerning suspected risk ing. The aim of this study was to elucidate possible risk factors factors for mBCC, during a one and a half year period in 1992 and for developing mBCC. Among twelve risk factors considered, 1993. The questions elicited: year of first BCC, skin tumours among skin tumour among relatives was the strongest, with an odds relatives (parents and siblings), occupations with more than half the ratio of 10.9 (p 10), age periods in these occupations set results suggest that the presence of skin tumour in the family at 10-year intervals ( 60 years), history of severe sunburn (red and painful skin), number of times sunburned (1, 2–5 |
