1. Rate corrected systolic time intervals and Valsalva manoeuvre. Issue 3 (March 1973) Authors: Layton, C; Di Nunzio, H; Gent, G; Freedman, P; McDonald, A Journal: Heart Issue: Volume 35:Issue 3(1973) Page Start: 236 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗