obstetrician and gynecologist造句

• The american college of obstetricians and gynecologists has published this research
  美国妇产科医师学会已发表此研究。
• The american college of obstetricians and gynecologists no longer advises bed rest to prevent preterm births because no large - scale , double - blind studies have proven the method effective , the times reports
  《纽约时报》报道，美国妇产科医师学会不再建议通过卧床休息预防早产，因为没有大规模的双盲实验证明这种方法有效。