Table:
Crohn's disease
Other names	Crohn syndrome, regional enteritis, Leśniowski-Crohn's disease

The three most common sites of intestinal involvement in Crohn's disease.
Specialty	Gastroenterology
Symptoms	Abdominal pain, diarrhea (may be bloody), fever, weight loss[1]
Complications	Anemia, skin rashes, arthritis, bowel cancer[1]
Usual onset	20 to 30[2]
Duration	Long term[1]
Risk factors	Tobacco smoking[3]
Diagnostic method	Biopsy, medical imaging[1]
Differential diagnosis	Irritable bowel syndrome, celiac disease, Behçet's disease, nonsteroidal anti-inflammatory drug enteropathy, intestinal tuberculosis[1][4]
Medication	Corticosteroids, methotrexate[1]
Prognosis	Slightly reduced life expectancy[1]
Frequency	3.2 per 1,000 (developed world)[5]

Based on the table image, extract the cell contents located in column 2. Represent the cells in a column with the JSON format {"column_id":"<column index>", "cell_list":"<a list of cells in this column>"}. For instance, {"column_id":"5", "cell_list": ["152", "UN", "one last kiss"]}.

The target cell values of column 2: {"column_id": "2", "cell_list": ["Crohn syndrome, regional enteritis, Leśniowski-Crohn's disease", 'Gastroenterology', 'Abdominal pain, diarrhea (may be bloody), fever, weight loss', 'Anemia, skin rashes, arthritis, bowel cancer', '20 to 30', 'Long term', 'Tobacco smoking', 'Biopsy, medical imaging', "Irritable bowel syndrome, celiac disease, Behçet's disease, nonsteroidal anti-inflammatory drug enteropathy, intestinal tuberculosis", 'Corticosteroids, methotrexate', 'Slightly reduced life expectancy', '3.2 per 1,000 (developed world)']}