Vila, G., Theodoropoulou, M., Stalla, J., Tonn, J. C., Losa, M., Renner, U., Stalla, G. K., & Paez-Pereda, M. (2005). Expression and function of sonic hedgehog pathway components in pituitary adenomas: evidence for a direct role in hormone secretion and cell proliferation. The Journal of Clinical Endocrinology & Metabolism, 90(12), 6687-6694.