XYZ can occur after severe YZX

[John012]

In my view "international differences" is more natural because it's the differences that are international, not the criteria.

It's hard to say about "strong" because we lack techical knowledge of the subject. Would "strongly indicated" work for you?

Either a colon or a comma could be used. The journal in which you plan to publish may have a stylistic preference on that point.

Ok, thank you!
And the rest is correct?

 

[probus]

It seems fine to me now.