<|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 available upon request, subject in some cases to approvals required by law. researchers interested in accessing the data should contact the study coordinator barbara gomes (barbara.gomes@kcl.ac.uk) on first instance as she has the complete dataset used in this study (with merged qualitative and quantitative data) and can liaise with the other data controllers. quantitative data were obtained from the uk office for national statistics (ons), which is a third party. access to data from ons is controlled by uk law under the statistics and registration service act 2007, and researchers may be required to complete an application process - see http://www.ons.gov.uk/ons/about-ons/business-transparency/freedom-of-information/what-can-i-request/approved-researcher-accreditation.html. qualitative data (i.e. reasons for refusal) were volunteered by non-participants to the study team and access is covered by ethical approval from the national health service research ethics committee (rec) london  dulwich, formerly kings college london rec (ref: 09/h0808/85). approvals by the study team and the ons are required so researchers can access the merged datasets used in this analysis which are currently securely stored at the cicely saunders institute, bessemer road, london se5 9pj.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>