FIGURE 4.

Overview of sensor position in (A) laboratory or clinical settings and (B) ambulatory settings. The size of the circles represents the total number of studies (neurological, age-related, rheumatological, others). Numbers in the circles represent the number of studies for each of these four specialties. For sensor position, one line joining several body parts represents one study using sensors attached to these body parts. When sensor was attached to a foot, ankle or thigh unilaterally, we added one study point on the right side and none on the left side.