3-phosphoglycerate dehydrogenase deficiency: a case report of a treatable cause of seizures - Turgay Coşkun; Halil Ibrahim Aydin; Mustafa Kiliç; Ali Dursun; Göknur Haliloğlu; Haluk Topaloğlu; Kader Karli-Oğuz; Tom J De Koning (The Turkish Journal of Pediatrics)