[1] Oakland Univ, William Beaumont Sch Med, Royal Oak, MI USA
[2] Wayne State Univ, Detroit, MI USA
[3] Univ Roma Tor Vergata, I-00173 Rome, Italy
[4] Univ Naples Federico 2, Dept Gynecol & Obstet, Naples, Italy
[5] Ctr AGB Ultrasonografia, Clin Sanatorio Aleman, Chile, Chile
[6] Chaim Sheba Med Ctr, IL-52621 Tel Hashomer, Israel
[7] Eastern Virginia Med Sch, Norfolk, VA 23501 USA
[8] Hebrew Univ Jerusalem, Hadassah Med Ctr, Dept Obstet & Gynecol, Jerusalem, Israel