<|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 data used in this study were extracted from the following papers: 1. Zou L, et al. (2020) SARS-CoV-2 Viral Load in Upper Respiratory Specimens of Infected Patients. N Engl J Med. 2. Oh MD, et al. (2016) Viral Load Kinetics of MERS Coronavirus Infection. N Engl J Med 375(13):1303-1305. 3. Peiris JS, et al. (2003) Clinical progression and viral load in a community outbreak of coronavirus-associated SARS pneumonia: a prospective study. Lancet 361(9371):1767-1772.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>