The phrase "a note regarding" is correct and usable in written English.
It can be used when introducing a topic or subject that you want to address or provide information about.
Example: "I am writing to provide a note regarding the upcoming changes in our policy."
Alternatives: "a message about" or "a comment on".
Just a note regarding the repeated claim that this is going to be at some point the dirtiest election campaign in history.
A note regarding the Executive Assessment: The EA was specifically designed for executives and provides the admissions team with a universal measure to evaluate candidates.
(Not that the victims in the WikiLeaks documents were all women; there are allegations of sexual assaults on adult male prisoners, and a note, regarding a kidnapping, that "gang intended to rape child").
The New Yorker, June 30 , 1934P. 10 Letter from the janitor to a tenant who had left him a note regarding certain bugs which appeared in her bathroom.
A note regarding the composer Maurice Jarre, famed for his movie scores, who died Sunday, at age eighty-four: we honor him for what he did, and also for what he inspired.
By E. K. Gann and Harold Ross The New Yorker, June 30 , 1934P. 10 Letter from the janitor to a tenant who had left him a note regarding certain bugs which appeared in her bathroom.
A recent study has provided a cautionary note regarding gene expression studies: the lack of validation and knowledge of the complexity of gene expression, small sample size and differential biological impact on individual fish, make it difficult, perhaps even impossible presently, to relate changes in gene expression to drug exposure.
Taken together, these results sound a cautionary note regarding the existence of an experimental "window of opportunity" for studying the effects of aging on LTD expression in hippocampal slice preparation.
On a similar note, regarding the pH dependence, the authors invoke a role for sodium at low pH; first, I'm not sure I understand the argument.
People buy product B because they want and lust after product B. Also an important note regarding our marketing: a product's technical superiority does not equal desire, and therefore sales… How many Linux laptops are getting sold?
A cautionary note regarding the new study is in order.
