Huib L. Vader

Low maternal free thyroxine concentrations during early pregnancy are associated with impaired psychomotor development in infancy

W. Wiersinga, V. Pop, H. Drexhage, 1999, Clinical endocrinology.

Maternal hypothyroxinaemia during early pregnancy and subsequent child development: a 3‐year follow‐up study

V. Pop, A. V. van Baar, E. Brouwers, 2003, Clinical endocrinology.