“…Other countries, notably Australia (Australian College of General Practitioners, 1966), Canada (Corley, 1966; Clarke, 1967; Hunter, 1968), New Zealand (Aitken, 1964), and the USA (Carmichael, 1965; Caliva, Mullin, Gigantelli, Needham, McLean, and Notkin, 1966; American Medical Association, 1966), are embarking on similar programmes which have been in existence for some time in Jugoslavia (Horder, 1965; Vuletic, 1966) East Germany (Friedrich, 1966), and Holland (Es, 1967). Their reasons and methods are not dissimilar to our own.…”