- Correspondence to: Prof Dr C Ertekin, Gönç Apt Talatpaşa Bulvari, No 12, Daire 3 35220 Alsancak, Izmir, Turkey;
- Received December 3, 2001
- Accepted June 6, 2002
- Revised April 4, 2002
- First published October 1, 2002.
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