Elisabetta Baldi, Michaela Luconi, Lorella Bonaccorsi, Csilla Krausz and Gianni Forti.

Dipartimento di Fisiopatologia Clinica, Unita' di Andrologia, Universita' di Firenze, viale Pieraccini 6, I-50139 Firenze, Italy.

Received 05/30/96; Accepted 07/30/96; On-line 08/15/96

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