Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.

Question: Is iron depletion effective in inducing a virologic response in patients with chronic hepatitis C who failed to respond to interferon therapy?
Answer: In patients who previously failed treatment with interferon, iron depletion induced by phlebotomy improves ALT levels but is ineffective in achieving viral eradication in patients retreated with interferon 3 million units three times per week.
no