Verjans, Marcelien, Katrien Jansen, Frank Van Calenbergh, Philippe De Vloo, and Marijke Proesmans. 2021. “Benign Coccygeal Dimple or Dermal Sinus Tract: A Big Difference”. Belgian Journal of Paediatrics 23 (2). http://belgjpaediatrics.com/index.php/bjp/article/view/150.