<|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: there are ethical restrictions on the ability to share the data publicly. data will be available upon request to muhammad bakari (mbakari@muhas.ac.tz). the data are filed at the study sponsor and will be made available upon written request to the study sponsor, the public health agency of sweden, at registrator@folkhalsomyndigheten.se.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>