@existing_id_fields = grep { $_ eq 'pubmedid' } @existing_id_fields;
}
my $patron = Koha::Patrons->find( { cardnumber => $self->{metadata}->{cardnumber} } );
my $patron = Koha::Patrons->find(
{ cardnumber => $self->{metadata}->{cardnumber} || C4::Context->userenv->{'cardnumber'} } );
return 0 unless $patron;
-