formal letter asking information to universities

Hi. I'm now trying to write a formal letter asking more information about medical residency. Here is my draft:

Dear Madam/mister XX:
I am writing you to request some information about your Preventive Medicine residency program.

I am first year resident on internal medicine from Asunción National University, Paraguay. Next year I am planning to study Public Health in the United States. Some preventive medicine residency program requires US citizenship. So I would like to know if your residency program accept IMG with J-1 visa.

I am looking forward to receiving your response.

Yours faithfully,
Elisa Akagi

Thanks. In advance.