Rheumatoid arthritis (RA) causes premature mortality, disability and compromised quality of life in the industrialized and developing world (1). Rheumatoid arthritis is a systemic inflammatory disease which manifests itself in multiple joints of the body.
A baritone is the most common type of male voice whose range lies midway between the high tenor voice and the low bass voice. In comedic operas, he is often the leader of the funny business, but he can also be the hero, who sacrifices himself for the tenor or soprano, or the villain.
Contralto is the lowest female voice type. In a choir, contraltoâs are commonly know as altos and sing the supporting melody to the sopranos. This doesnât mean that contraltos are not as important. On the contrary, because true altos are hard to find, a true alto has greater chances of a solo carrier than a soprano.