<|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: this study used data from 31 mental health centers of gyeonggi province in korea. due to ethical restrictions and patient confidentiality, this data cannot be made freely publicly accessible. however, persons may request access to this data for research purposes, by contacting dr. hyun ju hong (email: honghj88@gmail.com).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>