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'extensive and rigorous' is correct and usable in written English.
You can use it when describing something that requires a lot of time, effort and dedication. For example: "Becoming a doctor requires an extensive and rigorous education."
Exact(31)
More information about that extensive and rigorous process can be found here: https://www.cdc.gov/vaccines/basics/test-approve.html.html
"We went through an extensive and rigorous process to ensure that we found the best possible candidate to become the next chairman of ITV," he said.
"Foremost Farms' dairy products go through extensive and rigorous safety and quality protocols before they are sent to market," the company said in a written statement.
Work over the last few decades has resulted in an unprecedented number of genetic markers for a crop plant and an extensive and rigorous consensus genetic map.
These results were significant after extensive and rigorous control for multiple potential confounders, including several non-PCB contaminants (prenatal MeHg, DDE, HCB, and pre- and postnatal Pb).
Despite the limitations, the current study is the most extensive and rigorous investigation to date of the implications of government-supported HMIs for family change at the population level.
Similar(29)
Few studies intertwine so completely extensive narratives and rigorous quantitative analyses.
Digital Marketer foresees marketing trends well before other companies, thanks to their extensive research and rigorous testing of consumer groups.
Yet the expression of identified genes within core genomes is rarely verified by experimental observation due to the extensive resources and rigorous experimental design required to do so.
The U.S. has carried out more extensive and more rigorous research on the impact of this dramatic change in how young children are reared and cared for than any other country.
For complex interventions involving health informatics technologies, we believe an extensive and methodologically rigorous process of design and development must occur with inclusion of the targeted users.
More suggestions(15)
frequent and rigorous
deep and rigorous
large and rigorous
ambitious and rigorous
intense and rigorous
detailed and rigorous
diverse and rigorous
serious and rigorous
advanced and rigorous
depth and rigorous
extensive and solid
extensive and clear
extensive and interconnected
extensive and expensive
extensive and complex
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com