TY - JOUR AU - Niederwieser, A; Blau, N; Wang, M; Joller, P; Atarés, M; Cardesa-Garcia, J TI - GTP cyclohydrolase I deficiency, a new enzyme defect causing hyperphenylalaninemia with neopterin, biopterin, dopamine, and serotonin deficiencies and muscular hypotonia JO - Eur J Pediatr IS - 4 VL - 141 PY - 1984 DO - 10.1007/BF00572762 SP - 208 EP - 214 ER -