<|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: The clinical data of patients who were diagnosed with novel coronavirus COVID-19 positive by nucleic acid test from sputum, throat swab, lower respiratory secretion and other samples were collected from January 15 to February 1, 2020. All patients gave signed, informed consent for their dates to be used for scientific research. Ethical approval for the study was obtained from the Second Affiliated Hospital of Wenzhou Medical University (Zhejiang, China).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>