The main aim of the study was to identify factors associated with preterm birth. The study was conducted for a period of 6 months from September 2019 to February 2020 in 1607 women at SVS Medical College and Hospital. and Sushrutha Hospital. Mahabubnagar and it eventually selected 80 pregnant women for the final experiment. https://www.pomyslnaszycie.com/laguna-3hp-c-flux-cyclone-dust-collector-on-sale/