Professor E. S. Paykel
Douglas House
18B Trumpington Road
Cambridge
CB2 8AH
Ms Lynet Smith
Psychological Medicine Editorial Office
Cambridge University Press
UPH Building, Shaftesbury Road
Cambridge CB2 8BS
Email: lsmith@cambridge.org
Kenneth S. Kendler
Virginia Institute for Psychiatric and Behavioral Genetics
Dept of Psychiatry, Virginia Commonwealth University
P O Box 980710
Richmond, VA 23298-0710
USA