<|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: due to ethical restrictions related to patient confidentiality, data are available at request from the following individuals. data from indian cohort: dr. subhabrata chakrabarti (subho@lvpei.org) & dr. anil k. mandal (mandal@lvpei.org). data from brazilian cohort: dr. monica b. de melo (melomb@uol.com.br) & dr. ivan m. tavares (glaucomaclinic@gmail.com)<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>