1. Studies on breath methane: the effect of ethnic origins and lactulose. Issue 11 (November 1980) Authors: Pitt, P; de Bruijn, K M; Beeching, M F; Goldberg, E; Blendis, L M Journal: Gut Issue: Volume 21:Issue 11(1980) Page Start: 951 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗