This is a comparison of pregnancy achievement between two GnRH antagonist protocols which differ in the timing of GnRH antagonist initiation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
146
flexible antagonist administration according to specified criteria
fixed antagonist administration on day 6 of ovarian stimulation
Unit for Human Reproduction
Thessaloniki, Greece
Luteinizing hormone rise
Time frame: 3-14 days (duration of ovarian stimulation)
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