Cervical spine and muscle adaptation after spaceflight and relationship to herniation risk: protocol from ‘Cervical in Space’ trial 由 Daniel L. Belavy, Gabriele Armbrecht, Kirsten Albracht, Helena Brisby, Deborah Falla, Richard Scheuring, Roope Sovelius, Hans-Joachim Wilke, Kajsa Rennerfelt, Eduardo Martinez-Valdes, Michail Arvanitidis, Fabian Goell, Bjoern Braunstein, Svenja Kaczorowski, Vera Karner, Nitin Kumar Arora