Circulating, biologically inactive thyrotropin caused by a mutation in the beta subunit gene - Medeiros Neto, Geraldo Antônio; Herodotou, D T; Rajan, S; Kommareddi, S; Lacerda, L; Sandrini, R; Boguszewski, Margaret C. S; Hollenberg, A N; Radovick, S; Wondisford, F E (Journal of Clinical Investigation, 1996)