J. A. Janssen

In active acromegaly, IGF1 bioactivity is related to soluble Klotho levels and quality of life

S. Lamberts, L. Hofland, S. Neggers, 2014, Endocrine connections.

Free and total insulin-like growth factor I (IGF-I), IGF-binding protein-1 (IGFBP-1), and IGFBP-3 and their relationships to the presence of diabetic retinopathy and glomerular hyperfiltration in insulin-dependent diabetes mellitus.

S. Lamberts, A. J. van der Lely, J. Janssen, 1997, The Journal of clinical endocrinology and metabolism.

Postoperative evaluation of patients with acromegaly: clinical significance and timing of oral glucose tolerance testing and measurement of (free) insulin-like growth factor I, acid-labile subunit, and growth hormone-binding protein levels.

M. Bidlingmaier, S. Lamberts, C. Strasburger, 2005, The Journal of clinical endocrinology and metabolism.

The IGSF1 deficiency syndrome: characteristics of male and female patients.

R. Hennekam, M. Dattani, R. Hennekam, 2013, The Journal of clinical endocrinology and metabolism.

Serum free IGF‐I, total IGF‐I, IGFBP‐1 and IGFBP‐3 levels in an elderly population: relation to age and sex steroid levels

Pols, Lamberts, Grobbee, 1998, Clinical endocrinology.

Lack of associations between serum leptin, a polymorphism in the gene for the β3‐adrenergic receptor and glucose tolerance in the Dutch population.

S. Lamberts, F. de Jong, W. Blum, 1998, Clinical endocrinology.

Heterophilic antibodies may be a cause of falsely low total IGF1 levels.

S. Lamberts, E. Lentjes, J. Luermans, 2009, European journal of endocrinology.