protected function generateStructuredGenderHeader()
{
$gender_data = array_fill(0, 4, '');
if ($gender = $this->gender) {
if (strtolower($gender->name) == 'male') {
$gender_data[1] = 'X';
} elseif (strtolower($gender->name) == 'female') {
$gender_data[3] = 'X';
}
}
return $gender_data;
}