- Fetal antigen 1 in healthy adults and patients with pituitary disease: relation to physiological, pathological, and pharmacological GH levels. Andersen, M., Jensen, C.H., Støving, R.K., Larsen, J.B., Schrøder, H.D., Teisner, B., Hagen, C. J. Clin. Endocrinol. Metab. (2001)