<|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: all data used for this study are collected within the multicenter international apres study, coordinated by the netherlands institute for health services research (nivel). due to a consortium agreement and ethical restrictions related to patient privacy, requests to access this data can be made to the chairman of the apres steering committee, prof dr. f.g. schellevis (f.schellevis@nivel.nl). persons who request access to the data are subject to approval regarding the purpose of this request. they will also be bound by confidentiality laws, and according to international regulations will have to acknowledge the source of the data in case of publication.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>