Two randomized controlled trials (RCTs), one before-and-after study and two retrospective reports on clinical efficacy and safety were retrieved, together with 18 pharmacokinetic studies.
But retrospectivestudies have shown that many of those children did not, in fact, have the disease.
但回顾性分析表明这些儿童事实上并没有患病。
3
Two retrospective cohort studies among employees of international organizations and Dutch commercial pilots to investigate the actual risk of VTE related to air travel; and.