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APA Citation
Clements, P. J., Roth, M. D., Elashoff, R., Tashkin, D. P., Goldin, J., Silver, R. M., Sterz, M., Seibold, J. R., Schraufnagel, D., Simms, R. W., Bolster, M., Wise, R. A., Steen, V., Mayes, M. D., Connelly, K., Metersky, M., & Furst, D. E. (2007). scleroderma lung study (SLS): differences in the presentation and course of patients with limited versus diffuse systemic sclerosis. Annals of the rheumatic diseases, 66(12), 1641–1647. http://access.bl.uk/ark:/81055/vdc_100135160073.0x00005e