Name the scientists who got success in developing first test tube baby and in which year.

Explanation

**Step-by-Step Solution:**

1. **Identify the Achievement**: The question asks for the scientists who developed the first test-tube baby and the year it was achieved.

2. **Year of Achievement**: The first test-tube baby was developed in the year **1978**.

3. **Identify the Scientists**: The two key scientists involved in this achievement were:
- **Patrick Steptoe**: A British gynecologist.
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