1 Endocrine Unit, First Department of Propaedeutic Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece. alexandrakik@gmail.com.
2 Endocrine Unit, First Department of Propaedeutic Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
3 Iaso Maternity Hospital, Marousi, Greece.
4 Centre for Endocrinology, Barts and the London School of Medicine, London, UK.