Thank you for your help.<br><br> I'd got a precious help from <font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"><span style="color: rgb(0, 0, 0);">Ian Cullum and was able to solve my problem.<br>
<br> Best regards, <br><br></span></span></font><div>
<p style="margin-left: 36pt;"><font color="#888888" face="Times New Roman" size="3"><span style="font-size: 12pt; color: rgb(136, 136, 136);">Gilberto
Almeida</span></font></p>
</div>
<div>
<p style="margin-left: 36pt;"><font color="#888888" face="Times New Roman" size="3"><span style="font-size: 12pt; color: rgb(136, 136, 136);">Instituto
de Biofísica e Engenharia Biomédica<br>
Faculdade de Ciências da Universidade de Lisboa<br>
Campo Grande<br>
1749-016 Lisboa, Portugal</span></font></p>
</div><br>