Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Zollinger-Ellison Syndrome ?
    ### Response:
    A person who has any of the following emergency symptoms should call or see a health care provider right away:
                
- chest pain  - sharp, sudden, persistent, and severe stomach pain  - red blood in stool or black stools  - red blood in vomit or vomit that looks like coffee grounds

    