On 3 Nov 2016, at 13:59, Jose P. Paredes <[log in to unmask]> wrote:

Thank you, Saad.

But if this variability is usual, how could I compare the aslant track, for instance between a control group and a patient, if there is already big differences inside the control group? (in fact the "control group" would not be a control group).

Best regards,

Jose