the expression of "in addition to"

hi all:
i just ask if the following is correct from the grammar point of view:

" it was shown that, in addition to the errors due to the modulation process limitations, there is another error due to the sampling process"

some persons have told me that the expression " in addition to " must come in the beginning of the scentence. is this really true??????

[Anglika]

The example you have given indicates that the answer is no. The sentence could equally have been written:

In addition to the errors due to the modulation process limitations, it was shown that there is another error due to the sampling process.

Or


It was shown that there is another error due to the sampling process, in addition to the errors due to the modulation process limitations.

[sayd19]

i'd like to thank u angelica very much because of your care of answering my question. the original message was written by me before i have registered.
angelika, i would like to know if this answer is approved or not?
sorry if it seem a type of being silly, but really the subject is very important for me.
thanks in advance.

[Anglika]

Hello, Said - you asked if the expression "in addition to" always had to come at the beginning of a sentence.

The answer to your question is no, it does not always have to come at the beginning, as can be shown by the alternatives I provided.

[sayd19]

thanks you very much angelika
you really helped me.

[Anglika]

You're welcome