Where clinical trials of these drugs have been done, they've generally been conducted by doctors and small groups of investigators.
Since then, however, several groups of investigators have employed the idea of teaching a nonvocal language to apes.
That resulted in the discovery, by several groups of investigators in Iceland and the United States, of the gene variants, small alterations in gene sequences.
Assessment of neuronal activity as measured by 2-deoxyglucose (2-DG) uptake following CHL has been reported by two groups of investigators, with different findings.
Both groups of investigators found that no matter how they analyzed the data, there was not even a hint that use of a cell phone was linked to brain tumors.
Studies regarding the findings of core-and-skirt keratoprostheses for visual rehabilitation, biosynthetic tissue replacements for corneal transplantation, and thermo-responsive cell-detachable substrates for corneal cell sheet engineering have been reported by several groups of investigators.
Only after multiple trials are completed by several groups of investigators using differing methodologies produce concordant results whether it should be believed that the findings are well supported and are to be used in the practice.
"There have been a lot of individual investigators and groups of investigators conducting medical studies increasingly showing benefits of this agent in all sorts of individuals," said David Spencer, a vice president in Bayer's biological product unit.
They were awarded the Nobel Prize for Physics in 1987, and their discovery immediately stimulated groups of investigators in China, Japan, and the United States to produce superconducting oxides with even higher transition temperatures.
Diagnostic reliability of single groups of investigators using these criteria is moderate to substantial.
Smaller groups of investigators interrogated the postings and published a series of commentaries in CJASN.
