Decreased serum testosterone levels associated with 17β-hydroxysteroid dehydrogenase activity in 7-year-old children from a dioxin-exposed area of Vietnam

Yuko Oyama, Hoang Duc Phuc, Seijiro Honma, Nguyen Thi Phuong Oanh, Nguyễn Xuân Hùng, Le Thai Anh, Ho Dung Manh, Dao Van Tung, Dang Duc Nhu, Ngo Minh Tan, Pham Van Thuc, Nguyen Hung Minh, Ngô Văn Toàn, Rie Okamoto, Shizuko Omote, Hideaki Nakagawa, Vo Van, Teruhiko Kido