<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: data are owned by the massachusetts dept. of public health. due to ethical restrictions, data cannot be made publicly available but are available upon request. requests may be sent to: paul oppedisano, director, masschip. massachusetts department of public health, 250 washington street, boston ma 02108, 6th floor. phone: 617.624.5512; fax: 617.624.5631, 617.624.5698; cell: 781.648.8549. email: paul.oppedisano@state.ma.us. masschip: www.mass.gov/dph/masschip.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>