Preterm births in China between 2012 and 2018: an observational study of more than 9 million women - The Lancet Global Health

Preterm delivery rate in China: a systematic review and meta-analysis, BMC Pregnancy and Childbirth

Changes in preterm birth and stillbirth during COVID-19 lockdowns in 26 countries

Preterm birth and detection of common respiratory pathogens among pediatric pneumonia - ScienceDirect

Frontiers The Disease Spectrum and Influencing Factors of NICU in Xiangxi, Underdeveloped Area of China: A 9-Year Retrospective Study

Effects of extreme temperature on the risk of preterm birth in China: A population-based multi-center cohort study - The Lancet Regional Health – Western Pacific

Association of maternal preconception blood pressure with preterm birth: a population-based cohort study

The Interactions between Maternal Iron Supplementation and Iron Metabolism-Related Genetic Polymorphisms on Birth Outcomes: A Prospective Study in Chinese - The Journal of Nutrition

Association of China's two-child policy with changes in number of births and birth defects rate, 2008–2017, BMC Public Health

Frontiers Preterm birth update in Australasia: A report of the international symposium of Preterm Birth International Collaborative-Australasia branch

Interrupted-time-series analysis of the immediate impact of COVID-19 mitigation measures on preterm birth in China

IJERPH, Free Full-Text

Association between maternal pre-pregnancy obesity and preterm birth according to maternal age and race or ethnicity: a population-based study - The Lancet Diabetes & Endocrinology

Temporal trends and adverse perinatal outcomes of twin pregnancies at differing gestational ages: an observational study from China between 2012–2020, BMC Pregnancy and Childbirth