GENEVA (AP) -- A British physician, an Ethiopian former health minister and a Pakistani expert in non-communicable diseases are the three finalists vying for the top job at the World Health Organization in an election on Tuesday, aspiring to land a key U.N. post that confers great power to set worldwide medical priorities - and great responsibility as the worldamp;apos;s go-to person when emergencies like Ebola, Zika and SARS strike....