<|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: ethical restrictions prevent public sharing of data. phylogenetic data may be requested from dr michel vaubourdolle (head of the biological department, michel.vaubourdolle@sat.aphp.fr), pr antoine garbarg-chenon (head of the virological department, a.chenon@trs.aphp.fr) or the authors.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>