Another link https://pubmed.ncbi.nlm.nih.gov/22581416/
User Sushi9999, in the pregnant subreddit,
Another link https://pubmed.ncbi.nlm.nih.gov/22581416/
Interpregnancy Intervals and the Risk for Infant Mortality: A Case Control Study of Arizona Infants 2003–2007
Overview of attention for article published in Maternal and Child Health Journal, May 2012