L-thyroxine treatment of diffuse non-toxic goitre evaluated by ultrasonic determination of thyroid volume - Hansen, J. M; Kampmann, J; Madsen, S. N; Skovsted, L; Solgaard, S; Grytter, C; Grontvedt, T; Rasmussen, S. N (Clin. Endocrinol, 1979)