R. Haydon

Management of hypertension in the oldest old: a study in primary care in New Zealand.

C. Anderson, J. Gommans, S. Lillis, 2006, Age and ageing.

The relationship between dysphonia and sinusitis: a pilot study.

R. Haydon, M. Cecil, L. Tindall, 2001, Journal of voice : official journal of the Voice Foundation.