<|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: data are not freely available due to ethical restrictions. ethical approval for phase (age) 38 of the dunedin multidisciplinary health and development study was granted by the lower south regional ethics committee of the ministry of health (new zealand) [lrs/10/03/012]. requests for data should be directed to the director, professor richie poulton; dmhdru@otago.ac.nz. data are from the dunedin multidisciplinary health and development study. data dictionaries are available at http://dunedinstudy.otago.ac.nz.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>