科學(xué)家發(fā)現(xiàn)，孕婦補(bǔ)充復(fù)合維他命可以有效降低產(chǎn)生低重嬰兒的幾率
The scientists compared the findings with results from a group of 4000 women who did not receive the vitamins. A report by the scientists, from the United States and Tanzania, appeared in the New England Journal of Medicine. Wafaie Fawzi of the Harvard University School of Public Health led…