<|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: Reference: [1] Author: Health Emergency Office of the state health and Health Commission of the people's Republic of China Title: novel coronavirus pneumonia epidemic situation Published on the official website of the national health and Health Commission Year of publication: 2020 [2] By World Health Organization Title: situation report coronavirus disease 2019 (covid-19) Published on the official website of the World Health Organization Year of publication: 2020 [3] Author: Li Baojin; Wu Zilin; Hu Boyong; Chen Hongtao; Liao Silan; Ma CanYe; Liang Huichao; Title: novel coronavirus infection patients suspected and confirmed by surgical management guidelines Place of publication: Guangdong medicine (priority) Published on: February 28, 2020 [4] Data sources: WHO, CDC, ECDC, NHC, DXY, 1point3acres, Worldometers.info, BNO, state and national government health departments, and local media reports, the Johns Hopkins Coronavirus Resource Center .<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>