Bronnen:
1. "ziekte van Bechterew ', op MedicineNet.com - https://www.medicinenet.com/ankylosing_spondylitis/article.. htm
2.
"ziekte van Bechterew ', op eMedicine, door Wilfred CG Peh, MD, MBBS, FRCP (Glasg), FRCP (Edin), FRCR, MSHM, Clinical Professor, Faculteit der Geneeskunde, Nationale Universiteit van Singapore, Senior Consultant Radioloog, Programmabureau, Singapore Health Services - https://www.emedicine.com/RADIO/topic41.htm