The online case-crossover study is a novel approach to study triggers for recurrent disease flares
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Supported by an Arthritis Foundation Clinical Sciences grant, by a grant from the Department of Medicine, Boston University School of Medicine, and by National Institutes of Health grant AR47785.
PII: S0895-4356(06)00192-2
doi:10.1016/j.jclinepi.2006.04.006
© 2006 Elsevier Inc. All rights reserved.
