British Medical Bulletin: 'Opioid Peptides' Correspondence with the British Medical Bulletin regarding a special edition on 'Opioid Peptides', April 1981 - January 1983. Kosterlitz was on the planning committee and co-wrote a paper submitted for publication. Includes a typescript draft introduction prepared by Professor John Hughes, Department of Biochemistry, Imperial College of Science and Technology, London. 1981 - 1983