'I am clean' - Watch Hassan's angry outburst and Johnson's response

World 10,000m and 1500m champion Sifan Hassan hits back at critics after her coach Alberto Salazar was banned for doping violations but BBC pundit Michael Johnson says she has to expect to be under scrutiny.

WATCH MORE: Hassan storms to 1500m gold as Muir finishes fifth

READ MORE:'I was so angry' - Hassan defends 1500m win

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World Athletics 2019

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