This is not world wide corruption. From your own link:
A partial list of the retracted articles suggests most of them were written by scholars at universities in China.
Last year, in one of the most publicized scandals, the Journal of Vibration and Control, in the field of acoustics, retracted 60 articles at one time due to what it called a “peer review and citation ring†in which the reviews, mostly from scholars in Taiwan, were submitted by people using fake names.
