diagnosis of coronary heart disease

例句：

1. 1. The doctor made a clinical diagnosis of the patient's condition.
   医生对病人的状况进行了临床诊断。
2. 2. The researcher identified the etiology of the disease through genetic analysis.
   研究者通过基因分析确定了疾病的成因。
3. 3. Diagnosing the cause of the illness was crucial for treatment.
   诊断出疾病的原因对于治疗至关重要。