Dear authors,

We would like to inform you that the submission system of the journal has been restored by the responsible company. There are no longer any issues with the keyword inclusion stage.

We apologize for the inconvenience over the past few days.

In case of any further support needed, please send an email to abchf@cardiol.br or a message via Whatsapp (21 99386-3961) so that we can assist you.

We appreciate your patience and cooperation.