Multiple sclerosis in South America: month of birth in different latitudes does not seem to interfere with the prevalence or progression of the disease.
Fragoso Y D, Adoni T, de Almeida S M G, Alves-Leon S V, Arruda W O, Barbagelata-Aguero F, Brooks J B B, Carra A, Claudino R, Comini-Frota E R, et al.