This is from PNAS early edition, and has no citations yet (meaning nobody has used this work in subsequent studies). For the general topic, Google Scholar (http

This is from PNAS early edition, and has no citations yet (meaning nobody has used this work in subsequent studies). For the general topic, Google Scholar (https://scholar.google.com/ https://scholar.google.com/) is excellent at finding journal articles on any topic (including testicular function as it relates to ibuprofen). At first glance, this doesn't appear to be reproduction of prior work either.