Relationship between Funding Source and Conclusion among Nutrition-Related Scientific Articles
https://doi.org/10.1371/journal.pmed.0040005
“The main finding of this study is that scientific articles about commonly consumed beverages funded entirely by industry were approximately four to eight times more likely to be favorable to the financial interests of the sponsors than articles without industry-related funding. Of particular interest, none of the interventional studies with all industry support had an unfavorable conclusion. Our study also documented industry sponsorship was very common during the study period, indicating considerable potential for introduction of bias into the biomedical literature. In view of the high consumption rates of these beverages, especially among children, the public health implications of this bias could be substantial.”

Systematic review: the quality of the scientific evidence and conflicts of interest in international inflammatory bowel disease practice guidelines
https://doi.org/10.1111/apt.12290
“The majority of IBD clinical practice guideline recommendations are based on low-quality evidence. Furthermore, the majority of guidelines fail to comment on potential COI, and when present, most of the authors report numerous COI. In addition, management recommendations vary between societies. This study highlights the need for improving the development of IBD practice guidelines. Recommendations would be improved by stronger supporting evidence, agreement between societies, up to date recommendations and transparency regarding all potential bias in the development process. Centralizing all IBD guidelines within an international group may help solve several of the issues. Given these concerns, clinicians must be cautious when utilizing the recommendations in published IBD practice guidelines.”

• How to find sources of funding for a research article, when it is not declared
• How to investigate Revolving door (politics)
• How to “follow the money”, or trace Corporate Lobbying