From a news report:
The group looked at tissue from people who had any of five diagnoses: autism-like conditions, schizophrenia, bipolar disorder, depression and alcoholism.
Why isn't there a definite article before "five diagnoses"? They are listed, so it's a definite word. I would have used the:
The group looked at tissue from people who had any of the five diagnoses: autism-like conditions, schizophrenia, bipolar disorder, depression and alcoholism.'