1. Reasons for increase in pneumococcal bacteraemia
HC Schønheyder, HT Sørensen, B Kristensen, B Korsager 
The Lancet 
Volume 349, Issue 9064, (May 1997)
DOI: /S (05)
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2. Association between annual number of pneumococcal bacteraemia and annual volume of blood processed for culture, 1981–96, North Jutland County, Denmark
The constant of the regression equation was 0·6 and the coefficient 0·39 (SE 0·03).
The Lancet  , DOI: ( /S (05) )
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