by Hodgkins, P. R., Luff, A. J., Morrell, A. J., Botchway, L. T., Featherston, T. J., Fielder, A. R.
Published in British journal of ophthalmology (01.06.1992)

by Geroulakos, G., Botchway, L.T., Pai, V., Wilkinson, A.R., Galloway, J.M.D.
Published in European journal of vascular and endovascular surgery (01.04.1996)