"ethical approval" . . "IRB" . . "institutional review board (IRB)" . "Institutional review board" . . "health authority/ethics committee" . . "Institutional Review Boards (IRBs)" . . . "IRBs" . . "Institutional Review Boards" . "research ethics committees" . . "independent ethics committee" . "health research ethics committees" . "review mechanisms" . "hospital review board" . "institutional review board" . "human research review committee" . "ethics committee" . "Institutional Review Board (IRB)" . . "ethics review board" . . . "Institutional Review Board" . . "ethics board" . "Institutional review board" . "Ethics Committee" . . . . . "institutional review boards (IRBs)" . "institutional review boards" . .