- Correspondence to:
Dr A Sood
Southern Illinois University School of Medicine, Division of Pulmonary and Critical Care Medicine, 701 North First Street, Room D434, P O Box 19636, Springfield, IL 62794-9636, USA;
- Received 12 July 2004
- Accepted 11 January 2006
- Published in print 1 April 2006.
- Published online 24 March 2006.
- Published first 15 March 2006.
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