Corrections and clarifications.(Correction Notice)

Prospective investigation of transfusion transmitted infection in recipients of over 20 000 units of blood In this article by Fiona A M Regan and colleagues (12 February, pp 403-6), the time span of the study was not clear. In the second sentence of the Methods section, the dates given should have included the years (1 August 1991 to 31 May 1996).

ABC of arterial and venous disease: swollen lower limb (part 1--general assessment and deep vein thrombosis) Two errors occurred in this article by W Peter Gorman and colleagues (27 May, pp 1453-6). In the algorithm (p 1454), a small but important word ("or") was missing: the right hand arrow from the box "Consider clinical …