References:
http://pediatrics.aappublications.org/content/138/5/e20162938 (NEW: Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment)
https://bmjopen.bmj.com/content/3/5/e002299.info
https://www1.nichd.nih.gov/sts/campaign/science/Pages/other.aspx
Music: https://www.bensound.com