'... an earlier study "patients and their doctors" ...' was carried out by the author in 1967.
Patients and their doctors, 1977 : report on some changes in general practice between 1964 and 1977 by Ann Cartwright. ISBN 0850840651. Published by 'The journal of the Royal College of General Practitioners' in 1979. Publication and catalogue information, links to buy online and reader comments.