Add setting to select type of insulin
A) Novo/Humalog
B) FIAsp

If A selected use current curve calculation
If B selected use maths to match curve as described on page 12 of
http://www.ema.europa.eu/docs/en_GB/document_library/EPAR_-_Product_Information/human/004046/WC500220890.pdf