Removed the =intro= sectioning for better page formatting and use in the 'Did you know...' section of the main page.
= Intro =
The Ishima and Torchia 1999 2-site exchange on all times scales with the constraint that $p_A \gg p_B$ for [[SQ CPMG-type data]]. This model is labelled as '''IT99''' in [[Relaxation dispersion citation for relax|relax]].