Location - Cross-sectional descriptive study: 6 coastal communes of Thuy Nguyen district including: An Lu, Lap Le, Pha Le, Phuc Le, Thuy Trieu, Trung Ha and 2 communes of Cat Hai district, Phu Long and Tran Chau. - Interventional phase: + For women's groups: implemented in 2 intervention communes, Phuc Le and Tran Chau; The two control communes were Lap Le and Phu Long, because socio-economic conditions are similar.