The phrase "around 4 months" is correct and usable in written English.
It can be used when estimating a time period that is approximately four months long.
Example: "The project is expected to take around 4 months to complete."
Alternatives: "approximately 4 months" or "about 4 months".
(For reference, I've had another GelaSkin on my MacBook Pro for around 4 months now. No peeling there, either).
The waiting period for CE-MRA has varied with popularity and availability of the technique, rising to around 4 months in 2003 following the service's inception and prior to the second scanner acquisition.
As a rule of thumb, this may take around 4 months, less if you have regularly reviewed your work and written papers or reports, more if you are starting with raw data, have no experience writing material for publication (this being the standard you will need to achieve), or are just a slow writer.
However, the level of Prpf3 protein was higher in the retina than in any of the other tissues examined after the mice reached adulthood (around 4 months).
The broken nail was removed, renailing and bone grafting was done, and the patient was kept in a cast for around 4 months postoperatively and obtained union.
This tendency lessens as the infant develops, and by around 4 months of age, they are able to shift their attention more rapidly and accurately from one point to another.
The refit of JET took around 15 months.
The killers had operated freely for around 14 months.
Work, by project architects John McAslan and partners, will begin early next year and should take around 18 months.
Sexual maturity is estimated to be reached at around 20 months of age.
So from seedling to harvest is around 12 months or a year.
