Please provide input to complete the following sentence.
The most common form of depression is ______.
The most common form of depression is Major Depressive Disorder (MDD).
Complete the following task based on the instruction and optional input provided.### Instruction:
Please provide input to complete the following sentence.

### Input:
The most common form of depression is ______.

### Output:
The most common form of depression is Major Depressive Disorder (MDD).