Classify the following diseases according to their area of specialty.
Celiac Disease, Cystic Fibrosis, and Diabetes
1. Celiac Disease - Gastroenterology, a subspecialty of internal medicine. 
2. Cystic Fibrosis - Pulmonology, a subspecialty of internal medicine, with some overlap with pediatric pulmonology, medical genetics, and gastroenterology. 
3. Diabetes - Endocrinology, a subspecialty of internal medicine.
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following diseases according to their area of specialty.

### Input:
Celiac Disease, Cystic Fibrosis, and Diabetes

### Output:
1. Celiac Disease - Gastroenterology, a subspecialty of internal medicine. 
2. Cystic Fibrosis - Pulmonology, a subspecialty of internal medicine, with some overlap with pediatric pulmonology, medical genetics, and gastroenterology. 
3. Diabetes - Endocrinology, a subspecialty of internal medicine.