<|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: datasets utilized in this study are the enhanced perinatal surveillance (http://www.cdc.gov/hiv/pdf/statistics_2005_2008_hiv_surveillance_report_vol_16_no2.pdf) and the enhanced hiv/aids reporting system (http://www.cdc.gov/hiv/pdf/statistics_2005_2008_hiv_surveillance_report_vol_16_no2.pdf). due to legal restrictions related to protecting patient confidentiality, accessing anonymized data will require approval by the philadelphia department of public health institutional review board and the signing of a data sharing agreement. interested researchers can direct requests for an anonymized dataset to dr. kathleen brady: kathleen a. brady, md medical director/medical epidemiologist aids activities coordinating office philadelphia department of public health 1101 market st., 8th floor philadelphia, pa 19107 e-mail: kathleen.a.brady@phila.gov phone: (215) 685-4778 fax: (215) 685-4774<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>