Effects of non-pharmacological and non-surgical interventions on health outcomes in systemic sclerosis: protocol for a living systematic review oleh Jill Boruff, Elizabeth Yakes Jimenez, Luc Mouthon, Linda Kwakkenbos, Maureen Sauve, Marie Hudson, Joep Welling, Andrea Carboni-Jiménez, Geneviève Guillot, Malin Mattsson, S Nicole Culos-Reed, Marie-Nicole Discepola, Richard S Henry, David M Leader, Robyn Wojeck