.Publisheru00e2 $ s note Springer Attributes remains neutral when it come to supervisory cases in released maps and also institutional affiliations.This is a summary of: Hanson, C. et al. A time-stratified, caseu00e2 $ "crossover research of warm direct exposure as well as perinatal death coming from 16 medical facilities in sub-Saharan Africa. Nat. Med. https://doi.org/10.1038/s41591-024-03245-7 (2024 ).