Ryan MV, Alvarez R, Elias ER, Ihekweazu C, Wilkinson CC. Management of Pediatric Patient with Multiple Cranial, Intracranial, and Spinal Manifestations of Penttinen Syndrome: A Case Report. Pediatr Neurosurg. 2024;59(4):165-172. doi: 10.1159/000540756. Epub 2024 Aug 12. PMID: 39134002.