Based on prior knowledge, diabetes mellitus can contribute to the development of chronic heart failure. Therefore, it is important to analyze the relationship between the feature "endocr_01" (Diabetes mellitus in the anamnesis) and the presence of chronic heart failure in myocardial infarction patients.

To conduct this analysis, we need to observe the values of "endocr_01" for patients with and without chronic heart failure. We can then determine if certain values of "endocr_01" are more common in patients with chronic heart failure, indicating a relationship.

Here is the analysis result and the dictionary with the format requested:

```json
{
  "no": ["no"],
  "yes": ["no", "yes"]
}
```

Explanation:
- For patients without chronic heart failure (target class "no"), the only value of "endocr_01" is "no."
- For patients with chronic heart failure (target class "yes"), the values of "endocr_01" include both "no" and "yes," indicating that patients with and without diabetes mellitus in the anamnesis can develop chronic heart failure.