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《英国医学杂志》第Ⅱ卷第6196期(1979年)第951页报道:在1970年研究避孕似乎充满了希望。新的领域被探索着,并且人口过多的危急已广泛被认识,因而研究的基金能很快地提供。在十年结束时,情况已经改变。在许多发达国家人口的增长减慢。在发展中世界,虽然人口出生率有些下降,人口控制的主要问题
Volume II, Volume 6, 196 (1979), p. 951, British Medical Journal: Investigating contraception in 1970 seems to be full of hope. New fields were explored and the urgency of overpopulation was widely recognized, so the funds for the research were available soon. At the end of the decade the situation has changed. The growth of the population has slowed in many developed countries. In the developing world, although the birth rate has declined somewhat, the main issue of population control has been