Prophylaxis of venous thromboembolism with melagatran, given subcutaneously after total hip or total knee replacement: results from Phase II studies - Eriksson, BI; Ögren, M; Kälebo, P; Ahnfelt, L; Björkström, S; Sjöstedt, A; Folestad, A; Arfwidsson, A-C; Elvander, C Sareyko; Frison, L (Thromb Res Submitted, 2001)