<|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 from the Women‚Äôs Interagency HIV Study (WIHS), now part of the MACS/WIHS Combined Cohort Study (MWCCS), whose authors may be contacted at aMWCCS@jhu.edu. These data cannot be freely and publicly shared as they are of a highly sensitive nature. The MWCCS welcomes collaborations with investigators and with other cohorts, both nationally and internationally, who can access the dataset. To collaborate, a concept sheet must be submitted, reviewed and approved by the MWCCS executive committee. This is a requirement of cohort IRB approvals ensuring secure, timely, and ethical sharing of the cohort‚Äôs data. Data access is managed by the MACS/WIHS Combined Cohort Study (MWCCS), and data requests can be made by contacting aMWCCS@jhu.edu.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>