Examining Twitter-Derived Negative Racial Sentiment as Indicators of Cultural Racism: Observational Associations With Preterm Birth and Low Birth Weight Among a Multiracial Sample of Mothers, 2011-2021. - Nguyen TT; Merchant JS; Criss S; Makres K; Gowda KN; Mane H; Yue X; Hswen Y; Glymour MM; Nguyen QC; Allen AM (Journal of medical Internet research, 2023)