Here's a list of people close to Trump who may think he's seriously nuts

As revelations about President Donald Trump's child-like behavior and microscopic attention span call his mental fitness into question, the question lingers: Who are the sources speaking to the Michael Wolff and other media outlets about Trump's mental condition?

The Washington Post put together a list of possible leakers, speculators and concerned parties who might be speaking out about Trump's possible psychiatric issues.

"(T)here is a shortlist of people in or near Trump’s inner circle who have voiced doubts about his competence, or who have been reported to have done so, even if some denied it later," the Post's Avi Selk said.

1. Bob Corker

Sen. Bob Corker (R-TN) is a former Trump disciple gone apostate. He has publicly excoriated the president and called the current White House an "adult day care center."

2. James Comey

Former FBI Director James Comey expressed doubts about Pres. Trump's mental stability early on, after a series of meetings in which tried to extract a pledge of loyalty to his administration.

The New York Times said that Comey told associates at the time of the meeting that the president seemed "outside the realm of normal" and downright "crazy."

3. Rex Tillerson

Well, the Secretary of State did call the president a "f*cking moron." (Tillerson denies it.)

4. Susan Collins and Jack Reed

A live microphone caught Sens. Collins (R-ME) and Reed (R-RI) discussing their concern about Trump last year.

“I think — I think he’s crazy,” said Reed. “I mean, I don’t say that lightly and as a kind of a goofy guy.”

“I’m worried,” Collins said.

Trump lashed out at rumors about his mental soundness Saturday -- first on Twitter and then in a rambling Camp David press conference.