 Yeah, well, myasthenia gravis is a disease that can affect any muscle of the body. So common symptoms that people with myasthenia will experience are double vision, droopiness of eyelids, problems with swallowing, with chewing, with speaking, as well as weakness of the muscles of the neck, the arms, and legs. And as I'm sure you can imagine, when people have these types of symptoms, any or all of these symptoms, it can certainly negatively impact one's quality of life.