About the Authors
Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
The authors have declared that no competing interests exist.
BJE, JvdG, and TWJH designed the study. BJE, JvdG, TWJH, and MAvB analyzed the data. TWJH enrolled patients. BJE, JvdG, GMSB, TWJH, and MAvB contributed to writing the paper. TWJH wrote the grant that covers the salary of the BJE together with MavB.