TTN and muscle atrophy: Nakanishi Nakanishi N N Tsutsumi Tsutsumi R R Hara Hara K K Matsuo Matsuo M M Sakaue Sakaue H H Oto Oto J J Urinary titin N-fragment as a biomarker of muscle atrophy, intensive care unit-acquired weakness, and possible application for post-intensive care syndrome Urinary titin N-fragment as a biomarker of muscle atrophy, intensive care unit-acquired weakness, and possible application for post-intensive care syndrome J Clin Med J Clin Med 2021 2021 10 10 4 4 614 614 10.3390/jcm10040614 10.3390/jcm10040614 33561946 33561946