<|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: according to the act on processing of personal data (act no. 429 of 31 may 2000), the data are protected by the danish data protection agency. data are available upon request, and researchers may contact head of the perinatal epidemiological research unit, tine b henriksen professor, phd (tine.brink.henriksen@clin.au.dk), or the corresponding author, anna sellmer, phd (anna.sellmer@clin.au.dk).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>