I would say that there are not big differences but slightly ones.
For example, the approach vary because of economic point of view or variations of diseases depending on countries.
We should adapt our work in different environments.
Some small variation are more individual. They don’t depend on countries but are individual like tips coming often with experiences.
I think we should be open minded on different ways to do something but we should be systematic too. There isn’t just one Right way to work.