Monitoring physical activity by fitness tracking devices : Usage, acceptance and willingness to share data in patients with multiple sclerosis. Hammer H, Hoepner R, Aicher M L, Habernig S, Leutmezer F, Rommer P, Nef T, Chan A, Berger T, Bsteh G Wien Klin Wochenschr. 2026 Jun 15. PMID: 42298008. Abstract CommentRecommendBookmarkWatch