Conservative versus early surgical treatment in the management of pyogenic spondylodiscitis: a systematic review and meta-analysis oleh Santhosh G. Thavarajasingam, Kalyan V. Vemulapalli, Sajeenth Vishnu K., Hariharan Subbiah Ponniah, Alexander Sanchez-Maroto Vogel, Robert Vardanyan, Jonathan Neuhoff, Andreas Kramer, Ehab Shiban, Florian Ringel, Andreas K. Demetriades, Benjamin M. Davies