Table 1. Excluded studies and reasons for exclusion
Author	Reason for exclusion from study
Azevedo et al., 2013	Retrospective study. It is only an abstract. Does not have complete information that is needed for its analysis. Does not analyze live birth outcomes.
Barak et al., 2001	It is only an abstract. It does not have the complete information needed for its analysis. It does not analyze live birth, embryo quality and miscarriage rates.
Brassesco-Macazzaga et al., 2009	It does not analyze the live birth and miscarriage outcomes.
Castillo-Baso et al., 2011	It is only an abstract. It does not have the complete information needed for its analysis. It does not analyze the live birth and miscarriage outcomes.
Hambiliki & Bungum, 2012	It is only an abstract. It does not have the complete information needed for analysis. Does not analyze live birth, implantation and miscarriage outcomes.
Lee et al., 2013	Retrospective study. Only an abstract. It does not have the complete information needed for analyses. Does not analyze live birth outcomes.
Majumdar & Majumdar, 2013	Patients with inexplicable infertility and normozoospermic males
Menezo et al., 2010	It is only an abstract. It does not have the complete information needed for the analysis. Does not analyze outcomes related to live birth, fertilization and miscarriage rates.
Parmegiani et al., 2010b	Retrospective study
Parmegiani et al., 2012	Compares two physiologic-ICSI systems: SpermSiow vs. PICSI
Santibáñez-Morales et al., 2012	Retrospective study. It does not analyze live birth, fertilization and miscarriage outcomes.
Saymé et al., 2013	Retrospective study. It is only an abstract, not having the complete information needed for analysis. It does not analyze live birth outcomes.
Van Den Bergh et al., 2009	It does not analyze live birth, implantation, embryo quality, clinical pregnancy and miscarriage outcomes.
Worrilow et al., 2005	It is only an abstract. It does not have the complete information needed for analysis. It does not analyze live birth and miscarriage outcomes.
Worrilow et al., 2006	Only an abstract. It does not have the complete information needed for analysis. It does not analyze live birth outcomes.
Worrilow et al., 2007	Is only an abstract. It does not have the complete information needed for the analysis. It does not analyze live birth outcomes
Worrilow et al., 2009	It does not analyze live birth, fertilization and miscarriage outcomes.
Worrilow et al., 2010	It does not analyze live birth and miscarriage outcomes.
Worrilow et al., 2011a	It Does not analyze live birth, fertilization and miscarriage outcomes.
Worrilow et al., 2011b	It does not analyze live birth and fertilization outcomes.
Worrilow et al., 2013	It does not analyze live birth and embryo quality outcomes.