| 1. | In such situations specific laboratory tests are necessary to establish the etiology .
在此情况下，需要特异性实验来确定病原。 |
| 2. | Acute sinusitis is usually initiated by an acute respiratory tract infection of viral etiology .
急性鼻窦炎常常是由病毒性病因的急性呼吸道感染而发生。 |
| 3. | The occurrence of a disease in a particular locality may indicate the etiology and nature of the disease .
某一疾病在某一特定地区的发生可能暗示该病的病原学和性质。 |
| 4. | Study on the etiology of recurrent spontaneous abortion
感染与自然流产相关性研究 |
| 5. | Etiology analysis of recurrent early spontaneous abortion
感染与自然流产的关系 |
| 6. | Etiologies and treatment of fetal growth restriction
胎儿生长受限的病因和治疗 |
| 7. | The analysis of etiology of the acute poisoning in children
小儿急性中毒509例原因分析 |
| 8. | A survey of etiology of suppurative otitis media in children
小儿化脓性中耳炎的病原学调查 |
| 9. | Progress in etiology and pathogenesis of uterine leiomyomas
子宫肌瘤病因及发生机理研究进展 |
