<|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 cannot be made publicly available due to restrictions imposed by data custodians. data are available upon request from the secure analytics for population health research and intelligence (saphari) system made available by the centre for epidemiology and evidence (http://www.health.nsw.gov.au/epidemiology/pages/population-health-data-warehouse.aspx) and from the nsw ministry of health centre for health record linkage (http://www.cherel.org.au/).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>