Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) VACTERL association ?
    ### Response:
    VACTERL association is a disorder that affects many body systems. VACTERL stands for vertebral defects, anal atresia, cardiac defects, tracheo-esophageal fistula, renal anomalies, and limb abnormalities. People diagnosed with VACTERL association typically have at least three of these characteristic features.
    