A friend asked me about a comma in the following sentence:
The project took place in several centers between January and February.
Should there be one between centers and between? I really am not sure...
It seems to me that in formal writing the comma is necessary as it's the project taking place in several centers that happened between January and February not the centers themselves.
However, the meaning is clear without the comma. It's not like he's saying "I had many girls between 10 and 15 OR I had many girls, between 10 and 15".