preferred_name: Maintains head in midline for more than 15 seconds with or without hands being held.
preferred_name_lc: maintains head in midline for more than 15 seconds with or without hands being held.
label: Maintains head in midline for more than 15 seconds with or without hands being held.
label_lc: maintains head in midline for more than 15 seconds with or without hands being held.