APA (7th ed.) Citation

Sieper, J., & Braun, J. Fifty years after the discovery of the association of HLA B27 with ankylosing spondylitis. BMJ Publishing Group.

Chicago Style (17th ed.) Citation

Sieper, Joachim, and Juergen Braun. Fifty Years After the Discovery of the Association of HLA B27 with Ankylosing Spondylitis. BMJ Publishing Group.

MLA (9th ed.) Citation

Sieper, Joachim, and Juergen Braun. Fifty Years After the Discovery of the Association of HLA B27 with Ankylosing Spondylitis. BMJ Publishing Group.

Warning: These citations may not always be 100% accurate.