Mutation analysis of POUF-1, PROP-1 and HESX-1 show low frequency of mutations in children with sporadic forms of combined pituitary hormone deficiency and septo-optic dysplasia - Rainbow, L A; Rees, S A; Shaikh, M G; Shaw, N J; Cole, T; Barrett, T G; Kirk, J M (Clin Endocrinol (Oxf), 2005)