<|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: Clinical data was collected at the Centre for Eye Research Australia in collaboration with the Royal Victorian Eye and Ear Hospital and Melbourne Eye Specialists. These data are not publicly available. Source data of graphs may be available as source files if requested. A description of the code used to analyze the electroretinogram data is described in the Methods section, and we have also published this previously (Tang et al, 2018).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>