I was accidently diagnosed of a potentially malignant tumor in
critical part of the body. I met with the top surgeons all over US who
advised of immediate surgery citing very bad consequences including
death if I did not go for immediate surgery. The list of clinics
include top 10 hospitals in US. That was 3 years go. I monitored the
situation, my diet and workout. Now some of clinics informed that may
be there is no need for surgery at all.

I believe the surgery was suggested in the first place because it is
covered by insurances. I would like to write a book/article in this
regard. I am looking for

1. Suggested reference material with similar cases
2. Legal implecations of using the names of the doctors/hospitals

I have never written professional article/book. Any tips would be helpful.
The message I would like to bring forth is that the surgical options
need carefully studied.

Surgical options are carefully studied. A physician who performs
unnecessary surgeries can lose his hospital privileges and his license
to practice medicine.

The fact that, in your case, surgery was recommended, and you got
better without the surgery does not mean that there was any wrongdoing
here. It means that medicical science is not perfect. The outcome of
treating (or not treating) an illness cannot always be known in
advance. That isn't malpractice, it's just a fact: doctors, like other
humans, are not omniscient.

I quite agree, but there is an interesting statistic in Germany (no
site, but told to me by an orthopedic doctor) that MDs themselves only
have 1/5 as many operations as the total population.  They just cannot
happen to be that much healthier than everyone else, and I don't think
they have a lower life-expectancy that would suggest that avoided
necessary operations.

Main thing is, you're apparently well, and certainly alive! :-)

The point is that there was not one surgeon - 10 top hospitals. Not
only they said that I needed immediate surgery, they also informed
that they were the best capable to do the surgery. Before seeing the
doctor they take the impression of the insurance card. They called
pre-emptively and found out that the surgeries are covered. Then
insisted upon the surgery. The consequences were dire if not morse as
they were to remove the critical parts of the body.

The fact that
a) I was not given alternative options
b) It was covered by third party (insurance firms)

suggests that surgeons are inclined for surgery even if they know that
it is not completely harmless and it may not be required.

I'd like to know of similar cases, studies to give full credit to the issue.