Abstract

Get full access to this article
View all access options for this article.
References
1.Document prepared for WHO Visitors , Department of Health Hanoi (in French)
2.Personal Communications Bach Mai Hospital .
You are on the new improved site. You can view the old site in view-only mode here until June 27, 2026
Select search scope: search across all journals or within the current journal

View all access options for this article.