Is blinding in studies of manual soft tissue mobilisation of the back possible? A feasibility randomised controlled trial with Swiss graduate students oleh Javier Muñoz Laguna, Emanuela Nyantakyi, Urmila Bhattacharyya, Kathrin Blum, Matteo Delucchi, Felix Karl-Ludwig Klingebiel, Marco Labarile, Andrea Roggo, Manuel Weber, Thomas Radtke, Milo A Puhan, Cesar A Hincapié