linear regression with truncated data

[Tom Claessens]

Hi,

I have a question about linear regression.

I want to regress y (for example blood pressure) on x1 (length) and x2 
(weight).
Suppose that, for some reason, the x1 data is truncated, i.e. every 
person that is taller than 2 meters is said to be exactly two meters. 
Everyone smaller than two meters keeps his length.

Do I have to take this into account when performing linear regression, 
and if so, how?

Thank you very much in advance,
Tom