I am not part of this discussion ;-), but I would like to comment on something Jothar said:
>>But not from a spiritual point of view. Chizkiyahu hid the sefer of refuos because he felt it was taking away from everyone’s bitachon in Hashem<<
The Rambam says that this pshat is a farce. He does not know why people would be withheld lifesaving techniques due to lack of prayer.
The Rambam says that the “Sefer HaRefuos” was a book of witchcraft techniques used by idolaters to illicit cures. It was originally in the hands of Beis Din, so they could have reference as to whether or not an actually ma’aseh of Avoda Zarah was committed before punishing. This was hidden by Chizkiyahu due to the fact that sick people, in moments of desperation, began using it as a suggestive guide in order to get cured.
The above quoted Rambam can be found in The Rambam’s Peirush HaMishnayos, Pesachim, Perek 4, Mishna 9 (Happy Hunting!)