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APA Citation
Errichetti, E., Zabotti, A., Stinco, G., Quartuccio, L., Sacco, S., De Marchi, G., Piccirillo, A., & De Vita, S. (2016). dermoscopy of nail fold and elbow in the differential diagnosis of early psoriatic arthritis sine psoriasis and early rheumatoid arthritis. Journal of dermatology, 43(10), 1217–1220. http://access.bl.uk/ark:/81055/vdc_100037125773.0x000032