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We showed this letter to Dr. Norman who replied as follows

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AbstractFullPdf
Dec 2009001
Jul 2010001
Sep 2011001
Nov 2011001
Dec 2011001
Jan 2012002
Apr 2012001
May 2012002
Jul 2012002
Aug 2012002
Oct 2012006
Jan 2013004
Mar 2013002
Apr 2013003
May 2013001
Aug 2013002
Dec 2013002
Mar 2014002
Apr 2014002
May 2014002
Oct 2014001
Nov 2014003
Dec 2014004
Mar 2015103
May 2015001
Jun 2015003
Sep 2015003
Jan 2016003
Feb 2016001
Mar 2016004
May 2016002
Jul 2016001
Aug 2016001
Oct 2016003
Nov 2016001
Dec 2016001
Jan 2017001
Feb 2017006
Apr 2017002
May 2017002
Jun 2017001
Oct 2017003
Dec 2017003
Mar 2018001
Aug 2018001
Feb 2019001
Mar 2019002
Apr 20190011
May 2019001
Jun 2019001
Total10111