Hypoprolactinemia as a Clue to Diagnosis of Mild Central Hypothyroidism due to IGSF1 Deficiency. - Papadimitriou, Anastasios; Papadopoulou, Anna; Kleanthous, Kleanthis; Papadimitriou, Dimitrios T.; Papaevangelou, Vassiliki (Journal of Clinical Research in Pediatric Endocrinology, 2020)