From the article: "Similarly, paper mills – organizations that produce fabricated or low-quality manuscripts for profit – often rely on inflated co-authorship

From the article: "Similarly, paper mills – organizations that produce fabricated or low-quality manuscripts for profit – often rely on inflated co-authorship networks to boost the metrics of paying researchers..." The article references this paper on predatory journals as the source: https://link.springer.com/article/10.1186/s12916-015-0469-2?utm_source=getftr&utm_medium=getftr&utm_campaign=getftr_pilot&getft_integrator=tfo https://link.springer.com/article/10.1186/s12916-015-0469-2?... According to this paper more than 75% of the authors published in these journals originate in India and Africa (mostly Nigeria).