If you are searching for this term in a medical capacity, refers to the clinical classification system for Myasthenia Gravis : Class I : Ocular muscle weakness only . Class II : Mild weakness in non-ocular muscles . Class III/IV : Moderate to severe generalized weakness . Class V : Patients requiring intubation . MGFA Study Web Content: Title of Study here
: Suggests the source of the video is a high-definition rip.
: The Matroska Multimedia Container format used for the video file. Medical Context for MGFA