.Publisheru00e2 $ s note Springer Attribute remains neutral with regard to supervisory cases in released charts and institutional affiliations.This is a conclusion of: Hanson, C. et al. A time-stratified, caseu00e2 $ "crossover research study of warmth direct exposure and also perinatal mortality coming from 16 health centers in sub-Saharan Africa. Nat. Med. https://doi.org/10.1038/s41591-024-03245-7 (2024 ).