Fig. 1

Development over the period of observation. a AMH; b Number of antral follicles; c Ovarian volume; d LH; e FSH. In the box plots 50% of the values are located within the box. The upward or downward antennas each represent 25% of the values. The horizontal line inside a box indicates the median value. A circle (°) marks outlier values whose spacing down to the 25% or up to the 75% percentile is between 1.5 to 3 times the height of the box. An asterisk (*) indicates extreme values whose distance from the 25% or 75% percentile is more than three times the height of the box [41]