preferred_name: Lifts head in midline to greater than 45 degrees for more than 30 seconds.
preferred_name_lc: lifts head in midline to greater than 45 degrees for more than 30 seconds.
label: Lifts head in midline to greater than 45 degrees for more than 30 seconds.
label_lc: lifts head in midline to greater than 45 degrees for more than 30 seconds.