Litwińczuk, Michał, Joanna Szydełko, and Magdalena Szydełko. 2019. “The Diagnostic and Therapeutic Difficulties in Management With Pheochromocytoma in Pregnancy – a Review”. Journal of Education, Health and Sport 9 (9):543-59. https://apcz.umk.pl/JEHS/article/view/7476.