Methotrexate osteopathy in long-term, low-dose methotrexate treatment for psoriasis and rheumatoid arthritis. - Zonneveld,I.M.; Bakker,W.K.; Dijkstra,P.F.; Bos,J.D.; van Soesbergen,R.M.; Dinant,H.J. (Arch Dermatol, 1996)