Reference | Country | n | Year follow up | Gastric atrophy | Intestinal Metaplasia |
Annibale et al. | Italy | 40 | 32 | improved | improved |
Ito et al. | Japan | 26 | 60 | improved | improved |
Kokkola et al. | Finland | 22 | 30 | improved | improved |
Leug et al. | China | 587 | 60 | Slowed progression | Slowed progression |