1. WHO. 152 Million Babies Born Preterm in the Last Decade. (2023). Accessed: July 25, 2023: https://www.who.int/news/item/09-05-2023-152-million-babies-born-preterm-in-the-last-decade.
2. CDC. Preterm Birth. (2023). Accessed: July 25, 2023: https://www.cdc.gov/reproductivehealth/maternalinfanthealth/pretermbirth.htm.
3. Cervical length measurement for the prediction of preterm birth in multiple pregnancies: a systematic review and bivariate meta-analysis;Lim AC;Ultrasound Obstet Gynecol,2011
4. NIH. Preterm Birth: Causes, Consequences, Prevention. (2007). Accessed: July 25, 2023: https://www.ncbi.nlm.nih.gov/books/NBK11385/.
5. Cognitive, motor, behavioural and academic performances of children born preterm: a meta-analysis and systematic review involving 64 061 children;Allotey J;Br J Obstet Gynaecol,2018