<|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: the authors confirm that all data underlying the findings are fully available without restriction. all datasets used in this analysis were obtained from a third party (the national cancer institute). the national cancer institute stores this data in public repository and allows all researchers access to the data free of charge. however, interested researchers must register with the data management service cancer data access system (cdas) and submit a formal data request to cdas in order to obtain the datasets for plco (https://biometry.nci.nih.gov/cdas/plco/requests/instructions/) or nlst (https://biometry.nci.nih.gov/cdas/nlst/requests/instructions/). the primary cdas website - https://biometry.nci.nih.gov/cdas/also has useful information regarding the data collected for plco & nlst, the primary findings of both studies, a list of current publications and a link (https://biometry.nci.nih.gov/cdas/contact/nlst/) where interested researchers can send questions or comments concerning the data available for either trial. individuals affiliated with plco who researchers can contact regarding data requests are amanda black (blacka@mail.nih.gov; (240) 276-7277) or paul pinsky (pinskyp@mail.nih.gov; (240) 276-7060) individuals affiliated with nlst who researchers can contact regarding data request are denise aberle (daberle@mednet.ucla.edu; (310) 794-8989).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>