MULTIPLE SCLEROSIS AND POLIOMYELITIS.
D001315:Australia; D004739:England; D004813:Epidemiology; D006801:Humans; D009103:Multiple Sclerosis; D009520:New Zealand; D011051:Poliomyelitis; D013019:South Africa; D014852:Wales
AUSTRALIA; ENGLAND; EPIDEMIOLOGY; MULTIPLE SCLEROSIS; NEW ZEALAND; POLIOMYELITIS; SOUTH AFRICA; WALES