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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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. the data used for the article is freely available upon written request to the corresponding author. it is not uploaded in any public repository because, in a country like india, where tuberculosis is still a disease associated with considerable amount of social stigma and fear, any possible linkage with the patients resulting from the individual identification numbers used in the dataset, may lead to social discrimination of the patients, especially for the resistant and defaulter cases. hence this data has not been kept in any public repository. instead it is confidentially preserved under the supervision of institutional ethics committee of the institute of post-graduate medical education and research (ipgmer), kolkata, india and anybody can obtain the data freely by communicating with the corresponding author using the contact information below. prof. (dr) nishith kumar pal (corresponding author) institute of postgraduate medical education & research 244 b, a.j.c. bose road, kolkata 700020, india ph: +91-9433559514 email: nishithkpal53@gmail.com<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>