Neutral lipid storage disease with myopathy and myotonia associated to pathogenic variants on PNPLA2 and CLCN1 genes: case report oleh João Igor Dantas Landim, Ian Silva Ribeiro, Eduardo Braga Oliveira, Hermany Capistrano Freitas, Lara Albuquerque Brito, Isaac Holanda Mendes Maia, Daniel Gurgel Fernandes Távora, Cleonisio Leite Rodrigues