title: Evaluation of the combination of GnRH and HCG tests in differentiating constitutional delay of growth and puberty from hypogonadotropic hypogonadism in males.
authors.affiliation: London Centre for Paediatric Endocrinology, University College London, UK.
authors.forename: H A
authors.initials: HA
authors.lastname: Al-Shaikh
authors.forename: C G
authors.initials: CG
authors.lastname: Brook
authors.forename: P C
authors.initials: PC
authors.lastname: Hindmarsh