Well, I have some difficulties seeing Hamas or even Fatah participating peacefully to a secular Palestinian government. Two states living next to each other remains the only possible solution for at least a hundreds year. But Israel needs to make concessions to Fatah if one wants a chance to have a long enough peace to starts mending the civil society.
The Helsinki declaration https://en.m.wikipedia.org/wiki/Declaration_of_Helsinki
Is the reference for health sciences these days.