1. Increased pregnancy rates after ultralong postoperative therapy with gonadotropin- releasing hormone analogs in patients with endometriosis 
Dagmar Rickes, M.D., Ingrid Nickel, M.D., Siegfried Kropf, Ph.D., Jürgen Kleinstein, M.D. 
Fertility and Sterility 
Volume 78, Issue 4, Pages (October 2002)
DOI: /S (02)

2. FIGURE 1 Randomization of patients.
Rickes. Ultralong GnRH-a therapy before ART. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )

3. FIGURE 2
Pregnancy rates at different stages of endometriosis. (A), Patients undergoing IUI. (B), Patients undergoing IVF or ICSI. ∗P<.05. Shaded bar = with GnRH-a; open bar = without GnRH-a.
Rickes. Ultralong GnRH-a therapy before ART. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )