Eosinophilic bronchiectasis increases length and cost of hospitalization: a retrospective analysis in a hospital of southern China from 2012 to 2020.

"Declarations Ethics approval and consent to participateAll data was collected retrospectively according to the ethical standards of the observational research, so the requirement for written informed consent was waived, and the study protocol was approved by the Ethical Committee of Human Experimentation in the Sun Yat-Sen University (ID:2019213). Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The study was supported by the National Natural Science Foundation of China (82100054 and 82200029), Basic and Applied Basic Research Foundation of Guangdong Province (2020A1515110933) and Guangdong Medical Science and Technology Research Foundation (C202304). None of the sponsors had any role in study design, data collection, data analysis or manuscript preparation."