1. Perceived health and physical functioning in postpoliomyelitis syndrome: a 6-year prospective follow-up study1 
Frans Nollet, MD, PhD, Anita Beelen, PhD, Jos W Twisk, PhD, Gustaaf J Lankhorst, MD, PhD, Marianne de Visser, MD, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 84, Issue 7, Pages (July 2003)
DOI: /S (03)

2. Fig 1
Flow diagram of measurements taken and missing data at the various measurement points.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /S (03) )

3. Fig 2
Mean NHP physical mobility scores for the subjects with a decline of 3.75 seconds or more (○) and for the remainder of subjects (•). NOTE. The vertical bars represent the standard error of the mean.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /S (03) )