1. Bone density at the os calcis: reference values, reproducibility, and effects of fracture history and physical activity. Issue 1 (21st December 2004) Authors: Chinn, D J; Fordham, J N; Kibirige, M S; Crabtree, N J; Venables, J; Bates, J; Pitcher, O Journal: Archives of disease in childhood Issue: Volume 90:Issue 1(2005) Page Start: 30 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗