Footnotes
1. The National Sleep Foundation. September 2020. “Sudden Infant Death Syndrome and Sleep.”
https://www.sleepfoundation.org/baby-sleep/sudden-infant-death-syndrome
[Accessed June 2021]

Content
1. Pathways.org. Accessed May 2021. “Tummy Time.”
https://pathways.org/topics-of-development/tummytime/