In the above-named article by Martel-Duguech et al. (European Journal of Endocrinology 2021 185 (1) 167–177; (https://doi.org/10.1530/EJE-21-0209)), the following statement needs to be included in the Acknowledgements section on page 175 - The authors wish to thank the Departament de Medicina, Universitat Autónoma de Barcelona, Barcelona, Spain, for their support in technical assistance.