Task: Answer Verification
Input (English): Question: Are methods for detecting , quantifying , and adjusting for dissemination bias in meta-analysis described?
Answer: We present an overview of existing methods to detect, quantify, or adjust for dissemination bias. It remains difficult to advise which method should be used as they are all limited and their validity has rarely been assessed. Therefore, a thorough literature search remains crucial in systematic reviews, and further steps to increase the availability of all research results need to be taken.
Output (English): yes