Correction to: Journal of Endocrinological Investigation (2020) https://doi.org/10.1007/s40618-020-01211-x

The article “EStradiol and PRogesterone in In vitro ferTilization (ESPRIT): a multicenter study evaluating third‑ versus second‑generation estradiol and progesterone immunoassays”, written by N. P. Polyzos, E. Anckaert, P. Drakopoulos, H. Tournaye, J. Schiettecatte, H. Donner, G. Bobba, G. Miles, W. D. J. Verhagen‑Kamerbeek, and E. Bosch was originally published electronically on the publisher’s internet portal on 13th March 2020 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 18th May 2020 to © The Author(s) 2020 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The Original article has been updated.