Birkenmaier C, Komp M, Leu HF, Wegener B, Ruetten S. The current state of endoscopic disc surgery: review of controlled studies comparing full-endoscopic procedures for disc herniations to standard procedures. OTP [Internet]. 2014Jun.30 [cited 2024Apr.30];(2):41-50. Available from: http://otp-journal.com.ua/article/view/25416