W. Lolkema

Disease associated time consumption in early rheumatoid arthritis.

D. Postma, M. Prevoo, M. V. van Leeuwen, 2000, The Journal of rheumatology.

Radiographic damage in large joints in early rheumatoid arthritis: relationship with radiographic damage in hands and feet, disease activity, and physical disability.

M. Prevoo, H. H. Kuper, M. V. van Leeuwen, 1997, British journal of rheumatology.