The fine specificity of IgM anti-citrullinated protein antibodies (ACPA) is different from that of IgG ACPA
Parawee Suwannalai, Annemiek Willemze, Linda van Toorn, Gerrie Stoeken-Rijsbergen, Nivine Levarht, Jan W Drijfhout, Tom W J Huizinga, Rene E M Toes and Leendert A Trouw*