1. Validation of the Rockall risk scoring system in upper gastrointestinal bleeding. Issue 3 (1st March 1999) Authors: Vreeburg, E M; Terwee, C B; Snel, P; Rauws, E A J; Bartelsman, J F W M; Meulen, J H P vd; Tytgat, G N J Journal: Gut Issue: Volume 44:Issue 3(1999) Page Start: 331 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗