Correction to: Scientific Reports 10.1038/s41598-018-32647-0, published online 01 October 2018
In Figure 4, the panels showing the variability by cycle phases for Glycine, Serine, Methionine, Asparagine, Proline, Glutamine, Tyrosine, Gamma-glutamyl-alanine, Citrulline, O-Acetyl-serine, Alpha-aminobutyric acid and Gamma-glutamylglutamine were omitted. The correct Figure 4 appears below as Figure 1.
Figure 1.
Amino acid variability by cycle phase. Mean log intensity is depicted along with individual variability for threonine, ornithine, arginine, alanine, glycine, serine, methionine, asparagine, proline, glutamine, tyrosine, gamma-glutamyl-alanine, citrulline, o-acetyl-serine, alpha-aminobutyric acid, and gamma-glutamylglutamine at one time point for each of the 5 menstrual phases (M = menstrual, F = follicular, O = periovular, L = luteal, p = premenstrual). Each colored line represents an individual. Amino acids are depicted which have 2 or more contrast comparisons meeting the multiple testing threshold of q < 0.20. Statistically significant luteal phase reductions can be observed.

