Resistance Training Combined with Balance or Gait Training for Patients with Parkinson’s Disease: A Randomized Controlled Pilot Study oleh Johanna Theresia Biebl, Monica Azqueta-Gavaldon, Cornelia Wania, Olena Zettl, Matthias Woiczinski, Leandra Bauer, Claudia Storz, Kai Bötzel, Eduard Kraft