Infantile Perianal Pyramidal Protrusion: A Retrospective Review of 28 Patients September 2023 in “ Journal of the American Academy of Dermatology ” Ramneek K. Dhami, Nasro Isaq, Megha M. Tollefson We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on jaad.org →