could you correct this letter,please?

[tatu]

Hello,
could anyone kindly correct this piece of letter for me?I guess i made a lot of mistakes.here it is;
"...At present I work on completing my PhD dissertation.The theme of my research is"The efficacy of direct and indirect revascularization techniques in occlusive cerebrovascular disease"(new operative technique).
I'd be very honoured for the opportunity to continue my research in your hospital.
If time permiting please look through the attached letter...."
thank you in advance

[Tdol]

At present I work- I am working
I'd- I would
If time permiting please look through the attached letter- I'd change this to something like 'I would be grateful if you would read the attached letter' or simply 'I have atached a letter...'