<|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 data are confidentially preserved under the supervision of the institutional ethics committees of the indian council of medical research (icmr) virus unit, kolkata, calcutta medical college, kolkata and school of tropical medicine, kolkata, india. data are available upon request by communicating with the corresponding author using the contact information below. dr. nilanjan chakraborty (corresponding author) icmr virus unit, kolkata, id & bg hospital, gb4, 57 dr. sc banerjee road beliaghata, kolkata-700010, india ph: +919163785518 email: nilanjan_19@yahoo.com<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>