论文部分内容阅读
在匈牙利自1974年实施了新的人口政策以来,据统计1975～1978年先天性肢体缺如(CLDs)的发生率增加了30％。早在1970年初期已较广泛使用了口服避孕药物。1973年使用人数大约为25万人,到1978年已超过60万人。本文就CLDs进行对照性研究,
Since Hungary introduced the new population policy in 1974, it has been estimated that the incidence of congenital absence of limbs (CLDs) increased by 30% between 1975 and 1978. As early as the early 1970s, oral contraceptives have been used more widely. About 250,000 people were employed in 1973 and more than 600,000 by 1978. In this paper, a comparative study of CLDs,