Javier and Belen are new parents and they disagree

Javier and Belen are new parents and they disagree about whether their infant daughter should be allowed to sleep with them in their bed. Javier strongly feels the baby should be allowed to sleep with them because his family has done it this way for generations and it has always been safe. Belen disagrees, expressing concerns based on a friend’s story about his younger sister dying as a baby of SIDS.

In 2-3 paragraphs:

Do you support Javier’s or Belen’s position?
Justify your support with evidence from your own research. Be sure to provide links to any external sources that you use.
What would your advice be for this couple?