 The 1990 ACR criteria were designed for classification purposes only . Nevertheless, their good discriminatory performances, indicated by the initial ACR analysis, suggested their potential usefulness for diagnostic purposes as well.
<coherence>  The 1990 ACR criteria were designed for classification purposes only . Nevertheless, their good discriminatory performances, indicated by the initial ACR analysis, suggested their potential usefulness for diagnostic purposes as well.
 The 1990 ACR criteria were designed for classification purposes only , but their good discriminatory performances, indicated by the initial ACR analysis, suggested their potential usefulness for diagnostic purposes as well.