Letters Harm resulting from screening is likely to be high where prevalence of breast cancer is low BMJ 1997; 315 doi: https://doi.org/10.1136/bmj.315.7101.190 (Published 19 July 1997) Cite this as: BMJ 1997;315:190 Article Related content Metrics Responses Peer review Related articles No related articles found. Cited by... Seasonal variation of serum potassium and related prescription pattern: an ecological time seriesAbstract Fulltext PDF Seasonal variation of serum potassium and related prescription pattern: an ecological time seriesAbstract Fulltext PDF Seasonal pseudohyperkalaemiaAbstract Fulltext PDF