<qa>  What is the average dose of empty liposome?2. Empty liposome Joint Entecavir group:Inject empty liposome 900μg at week 0, 3, 6, 9, 12, 15, 18, 21, 24, 28, 32, 36, 40, 44, 48 Oral intake entecavir 0.5mg per day. 