Significant variation in mortality and functional outcome after acute ischaemic stroke between western countries: data from the 'Tinzaparin in Acute Ischaemic Stroke Trial' (TAIST) - Gray, Laura J.; Sprigg, Nikola; Bath, Philip M.W.; Sorensen, Per; Lindenstrom, Ewa; Boysen, Gudrun; De Deyn, Peter Paul; Friis, Pal; Leys, Didier; Marttila, Reijo; Olsson, Jan-Edwin; O'Neill, Desmond; et al. (2006)