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Errors occurred in the abstract and Table 1 of the paper by Riise et al that appeared in the May issue of theBJO (1997;81:378–385).
The first sentence in the Methods section of the abstract should read as follows:
‘The phenotypes of affected siblings in 11 Scandinavian families with two or more members who had at least three of the features: retinal dystrophy, polydactyly, obesity, hypogenitalism, and mental retardation, were compared.’
The correct version of Table 1 appears below. We apologise for these errors.