“…Fertility preservation options have also been used for other diseases such as lupus, glomerulonephritis, myelodysplasia, and premature ovarian failure as well as in women who wish to preserve their ovarian function for future reproductive potential and delayed childbearing age (Posada et al, 2001;Imhof et al, 2004;Demeestere et al, 2007;Maltaris et al, 2007;Isachenko et al, 2007;Ajala et al, 2010;Rahimi et al, 2010;Dolmans et al, 2010;Michaeli et al, 2012;Husseinzadeh, 2013). Despite rapid progress in cryopreservation technology and existing other resources and infrastructure, fertility preservation for young breast cancer patients is in its early stage with many challenges (Posada et al, 2001;Imhof et al, 2004; National Collaborating Center for Women's and Children's Health (UK), 2004; Sonmezer and Oktay, 2004;Lee et al, 2006;Demeestere et al, 2007;Isachenko et al, 2007;Maltaris et al, 2007;Ajala et al, 2010;Dolmans et al, 2010;Ewertz and Jensen, 2010;Rahimi et al, 2010;Christinat and Pagani, 2012;Klemp and Kim, 2012;King et al, 2012;Michaeli et al, 2012;Klemp and Kim, 2012;King et al, 2012;Fields et al, 2013;Husseinzadeh, 2013;Husseinzadeh and Husseinzadeh, 2013;Leclere et al, 2013;Loren et al, 2013;Ronn and Holzer, 2013). The present study aimed to systematically review available guidelines on preservation of fertility in breast cancer patients.…”