What is one of the key enhancements in GPP2 compared to GPP?

The correct choice highlights a significant advancement in the process of medical publication with regard to authorship and collaboration. GPP2 (Good Publication Practice, version 2) emphasizes the importance of transparency and authors' rights, particularly concerning data sharing. This means authors have greater authority and responsibility when it comes to determining how and when their data can be shared with the public or used in subsequent analyses.

This enhancement reflects a broader trend in the scientific community toward open access and transparency, with the goal of fostering trust in published literature and enhancing the reproducibility of research findings. By empowering authors in the context of data sharing, GPP2 aligns with the increasing calls for accountability in research publishing, encouraging authors to take a more active role in the stewardship of their work.

The other options do not accurately represent key enhancements noted in GPP2. For instance, GPP2 does not advocate for the complete removal of sponsors from the publication process, nor does it mandate the publication of all unpublished studies. Additionally, limiting authorship solely to principal investigators contradicts the collaborative nature of research, which often includes contributions from multiple stakeholders. Thus, the enhancement in authors' authority regarding data sharing exemplifies a meaningful shift towards more ethical practices in the field of medical publications