Cold start up problem

I have an Audi A3 and every time I turn the engine over, (only on a cold start), when I start to drive it will stutter when I try to accelerate then but this will only happen for about a minute until the engine has warmed up and it runs perfectly after that, any suggestions of what this can be?
i have been told it could possibly be injectors? I have put fuel additive to my tank and the problem is still occurring.
Any suggestions would be greatly welcomed.