Washington Nov 17: President Barack Obama today extended his condolences to the family of Martin Salia a doctor from Sierra Leone who died at a US hospital during treatment for the deadly Ebola virus. 'We extend our heartfelt condolences to the family and loved ones of Dr Martin Salia who succumbed this morning to Ebola at the University of Nebraska Medical Centre despite the heroic efforts of that institution's incredibly talented team' Obama said. Forty-year-old Salia a native of Sierra Leone and a US resident was infected with the deadly hemorrhagic fever while treating patients in his home country and