Evaluating glial and neuronal blood biomarkers GFAP and UCH-L1 as gradients of brain injury in concussive, subconcussive and non-concussive trauma: a prospective cohort study.

Objectives: To evaluate the ability of glial fibrillary acidic protein (GFAP) and ubiquitin C-terminal hydrolase (UCH-L1) to detect concussion in children and adult trauma patients with a normal mental status and assess biomarker concentrations over time as gradients of injury in concussive and non-concussive head and body trauma.

Design: Large prospective cohort study.

Setting: Three level I trauma centres in the USA.

Did relaxing clinical trial regulation enhance the stock of scientific knowledge in India? Not necessarily.

The increasing amount of clinical research conducted outside the "traditional" countries raises questions about the benefits of hosting offshored clinical research. The extent to which trials contribute to the scientific knowledge base and, in particular, whether there are differences between different types of trials remain open questions. By examining a change in clinical trial regulations in India, a country often viewed as a first-choice offshoring location, we study how the relaxation of clinical trial regulations affects the number and the type of clinical trials as well as the domestic scientific knowledge base.

Prepublication disclosure of scientific results: Norms, competition, and commercial orientation.

On the basis of a survey of 7103 active faculty researchers in nine fields, we examine the extent to which scientists disclose prepublication results, and when they do, why? Except in two fields, more scientists disclose results before publication than not, but there is significant variation in their reasons to disclose, in the frequency of such disclosure, and in withholding crucial results when making public presentations. They disclose results for feedback and credit and to attract collaborators. Particularly in formulaic fields, scientists disclose to attract new researchers to the field independent of collaboration and to deter others from working on their exact problem.

Authorship and contribution disclosures.

Most scientific research is performed by teams, and for a long time, observers have inferred individual team members' contributions by interpreting author order on published articles. In response to increasing concerns about this approach, journals are adopting policies that require the disclosure of individual authors' contributions. However, it is not clear whether and how these disclosures improve upon the conventional approach.