Task: Answer Verification
Input (English): Question: Are in patients with rheumatoid arthritis , Dickkopf-1 serum levels correlated with parathyroid hormone , bone erosions and bone mineral density?
Answer: In patients with RA, serum levels of DKK1 are significantly increased, correlate with PTH and are associated with increased risk of bone erosions and osteoporosis. However, this finding deserves confirmation in a larger and more selected population.
Output (English): yes