.Publisheru00e2 $ s take note Springer Attributes remains neutral with regard to managerial cases in posted charts and institutional affiliations.This is a recap of: Hanson, C. et cetera. A time-stratified, caseu00e2 $ "crossover study of warmth visibility as well as perinatal death coming from 16 health centers in sub-Saharan Africa. Nat. Med. https://doi.org/10.1038/s41591-024-03245-7 (2024 ).