<|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 have legal restriction because they belong to the instituto mexicano del seguro social. however, results can be available to all interested researchers upon request contacting the clinical investigation coordination in http://www.imss.gob.mx/profesionales-salud/investigacion. additional data are available upon request due to ethical restrictions regarding patient privacy. requests for these additional data may be sent to the corresponding author.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>