Sorry for all that mess: I got a problem with my mail-server...

        Alan.

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Alan GARNY                              http://www.physiol.ox.ac.uk/~gry
University Laboratory of Physiology       Job Phone: +44 (0)1865 272-501
Parks Road                                 Job  Fax: +44 (0)1865 272-554
Oxford, OX1-3PT, UK                      Home Phone: +44 (0)1865 370-240