US President-elect Donald Trump has said, he is open to leaving intact key parts of President Barack Obama's healthcare bill.<br/><br/>Mr Trump, who has pledged to repeal the 2010 law, said he will keep the ban on insurers denying coverage for pre-existing conditions. <br/><br/>He told the Wall Street Journal that he also favoured allowing young adults to be insured on their parents' policies.<br/><br/>Meanwhile, protesters angered by Mr Trump's election gathered in several US cities for a third night on Friday. Thousands took to the streets of Miami, Atlanta, Philadelphia, New York, San Francisco and Portland, Oregon, voicing anger at the president-elect's comments about immigrants, Muslims and women.