Development of a Rasch-Built Amyotrophic Lateral Sclerosis Impairment Multidomain Scale to Measure Disease Progression in ALS.

de Jongh AD, van Eijk RPA, Bakker LA, Bunte TM, Beelen A, van der Meijden C, van Es MA, Visser-Meily JMA, Kruitwagen ET, Veldink JH, van den Berg LH.