| 1. | Observational study on the extra - floral nectary of cherry and peach
樱桃和桃花外蜜腺的观察研究 |
| 2. | Analysis of hospital data by statistical methods for observational studies
观察性研究方法与医院资料的统计分析 |
| 3. | Observational study of fosinopril on treatment of 46 essential hypertensives
福辛普利治疗原发性高血压46例临床疗效观察 |
| 4. | Observational study of wind fields , temperature fields over beijing area in summer and winter
北京区域夏冬季风场温度场的观测研究 |
| 5. | An observational study on the vertical distribution and synoptic variation of ozone in the arctic
北极臭氧垂直分布和天气尺度变化的观测研究 |
| 6. | Most importantly , observational studies cannot distinguish indicators of risk from causal factors
最为重要的是观察性研究无法区分风险指标和偶然因素。 |
| 7. | An observational study on curative effects of shuangligan and glycine in rats with severe acute pancreatitis
双利肝和甘氨酸对重症急性胰腺炎大鼠疗效的观察 |
| 8. | Conclusions : selenium concentrations were inversely associated with coronary heart disease risk in observational studies
结论：观察性研究中硒浓度与冠心病危险度呈负相关。 |
| 9. | There are multiple possible reasons for discrepant results between observational studies and large randomized trials
导致观察性研究和大规模随机临床试验结果之间不一致的可能原因有多种。 |
| 10. | We analyzed data from the program to improve care in acute renal disease ( picard ) , a multi - center observational study of arf
我们分析了来自改善急性肾脏疾病照护计划（ picard ） ? ?一个arf多中心观察研究的数据。 |
