By Stanley G. Clayton, T.L.T. Lewis (Enmeritus Professor of Obstetrics and Gynaecology, University of London), G.V.P. Chamberlain (Professor of Obstetrics and Gynaecology, St George's Hospital Medical School, London)
By Stanley G. Clayton, Ash Monga
By Stanley G. Clayton, T. L. T. Lewis, G. Pinker
