[1
]
Department of Gynecology and Obstetrics, Medical Faculty, University of Cologne, Germany;
Department of Reproductive Medicine, Medical Division, National Research Center of
Egypt, Egypt. Electronic address: eaims_gm@yahoo.com.
[2
]
Department of Gynecology and Obstetrics, Medical Faculty, University of Cologne, Germany.
Electronic address: vladimir.isachenko@googlemail.com.
[3
]
Department of Gynecology and Obstetrics, Medical Faculty, University of Cologne, Germany.
Electronic address: e.isachenko@yahoo.de.
[4
]
Department of Gynecology and Obstetrics, Medical Faculty, University of Cologne, Germany.
Electronic address: gohar.rahimi@uk-koeln.de.
[5
]
Department of Gynecology and Obstetrics, Medical Faculty, University of Cologne, Germany.
Electronic address: peter.mallmann@uk-koeln.de.