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Those that are interested in reading the full text of this study of prof. Coimbra, can find it on this page http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001000019&lng=en&nrm=iso&tlng=en On the same page you can download the full text in PDF format. Hans. ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn