Q. what is the number one cause of child deaths
You might want to try searching ProQuest, the library's largest set of databases, for this topic.
On the online library page, click Find Articles and more.
At the top of the Find Articles and more page, click the ProQuest Central link.
Once in ProQuest Central, click the Advanced Search page.
In the first search box, type in children
in the next box down, type in cause
in the third box down, type in death
click Add a box and type in united states (if that's what you are looking for)
Also, click Full Text and Peer Reviewed under Search options.
This should narrow down the results for this topic.