Verstappen, S. M. M., Watson, K. D., Lunt, M., McGrother, K., Symmons, D. P. M., & Hyrich, K. L. (2010). Working status in patients with rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis: Results from the British Society for Rheumatology Biologics Register. Oxford University Press.

Verstappen, Suzanne M. M., Kath D. Watson, Mark Lunt, Katie McGrother, Deborah P. M. Symmons, and Kimme L. Hyrich. Working Status in Patients With Rheumatoid Arthritis, Ankylosing Spondylitis and Psoriatic Arthritis: Results From the British Society for Rheumatology Biologics Register. Oxford University Press, 2010.

Verstappen, Suzanne M. M., et al. Working Status in Patients With Rheumatoid Arthritis, Ankylosing Spondylitis and Psoriatic Arthritis: Results From the British Society for Rheumatology Biologics Register. Oxford University Press, 2010.