Parts of a sentence are given below in jumbled order. Arrange the parts in the correct order to form a meaningful sentence.
(P) after undergoing rigorous peer-review
(Q) which included feedback from experts in the field
(R) and revisions by the authors
(O) the research paper was published in a prestigious journal
1
PQOR
2
OQPR
3
PROQ
4
OPQR