Prognostic impact of facial nerve resection in patients treated for a primary parotid cancer abutting the facial nerve without preoperative paralysis: a multicentric study of the REFCOR group with propensity score matching analysis.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: Identify all the mentioned drugs in the given text. Text may or may not contain drug. If they contain more than 1 drug, use ";" as delimiter and join them. ### Input: Prognostic impact of facial nerve resection in patients treated for a primary parotid cancer abutting the facial nerve without preoperative paralysis: a multicentric study of the REFCOR group with propensity score matching analysis. ### Output: 