“…In the 17 surgical patients with available data, the time course of patients' neurological deterioration was noted in days [6][7][8]10,11,13,14,17,18,20,23,24,[26][27][28][29][30][32][33][34]36,37]. The duration of symptoms refers to the period of time between when the patient first reported noticing symptoms and their definitive surgery.…”