Given the role anti-MAG antibodies are thought to play in thepathogenesis of the neuropathy, treatments havefocused on decreasing circulating IgM by removal(eg, PLEX), inhibition (eg, IVIG) or reduction ofsynthesis (eg, corticosteroids, immunosuppressivedrugs, interferon-a or rituximab).
The Qatari riyal, denoted by QAR, is the official currency of Qatar. Divided into 100 dirhams, the riyal is issued by the Qatar Central Bank.
1 Both coins were denominated in Baisa, with a rate of 200 Baisa = 1 Rial.  The Saudi Riyal became the official currency of Oman in 1970. The Saudi Riyal was equivalent to the British Pound and replaced the Gulf Rupee at a rate of 21 Rupees = 1 Rial.