Elsevier已為以下PSS產品安排了維護計畫。將會針對各別產品安排單獨的資料庫變更維護時間。因此，根據以下時間表，每個產品將出現1小時的停機：

Elsevier has scheduled planned maintenance for all PSS products. This will involve taking PSS solutions offline individually to implement necessary database changes. Consequently, there will be a 1-hour outage for each product according to the following schedule:

ExpertPath: Thursday, Nov 21st @ 10:00 AM  - 11:00 AM  GMT+8

ImmunoQuery: Thursday, Nov 21st @ 11:00 AM - 12:00 PM  GMT+8