Armstrong D S, Grimwood K, Carzino R, Carlin J B, Olinsky A, Phelan P D
Department of Thoracic Medicine, Royal Children's Hospital, University of Melbourne, Parkville, Victoria, Australia.
BMJ. 1995 Jun 17;310(6994):1571-2. doi: 10.1136/bmj.310.6994.1571.