Birkenmaier, Christof, John C. Chiu, Andrea Fontanella, Hansjörg F. Leu, and Sebastian Ruetten. “Guidelines for Percutaneous Endoscopic Spinal Surgery”. ORTHOPAEDICS TRAUMATOLOGY and PROSTHETICS, no. 1 (April 2, 2014): 87–95. Accessed April 29, 2024. http://otp-journal.com.ua/article/view/23362.