In case it doesn't get to make the login follows the instructions below, choosing the one that is adapted to the navigator used by the user:

Internet Explorer: in menu Tools, Internet Options, go to 'Privacy' and then allow the security level in Medium, either add the address of Revista Enfermagem Digital Cuidado e Promoção da Saúde how reliability, http://www.sgponline.com.br/redcps/sgp/, and click in OK.

Mozilla Firefox: in the Tools menu, go to link 'Options', then click the Privacy tab, the item 'What should Firefox, select' Use my settings 'and then select the option' Allow sites to set cookies. Click OK to finish and be ready to login in SGP.