Is there an efficient way to split a large org file into smaller ones?

Lets say I have a master file with the following

* Notes

**  Candidate A

 - Strong technical background

 - High H-factor

 - good funding

- More established investigator

- Huge startup need $$

**  Candidate B

- lower startup need

- signal processing  

- young investigator

How do I export the subtree to separate org files, say

- Candidate-a.org

- Candidate-b.org

Thanks

M