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Letter
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  1. Correspondence to Richard Hubbard, University of Nottingham, Division of Respiratory Medicine, Clinical Sciences Building, City Hospital, Hucknall Road, Nottingham NG5 1PB, UK; richard.hubbard{at}nottingham.ac.uk
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Hubbard R, Baldwin D
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Publication history

  • Accepted October 11, 2010
  • First published November 15, 2010.
Online issue publication 
March 21, 2011

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