Pfizer must authorize any extraordinary expenditure in writing before it may be incurred; 在任何异常支出发生前,辉瑞必须以书面形式予以批准;
Providing documentation of all expenses to obtain reimbursement and providing Pfizer with written notification in advance of any extraordinary expenditure. 提供用于报销所需的全部费用文件,并且在出现异常支出之前提前向辉瑞提供书面通知。