Former Dallas Cowboy Marion Barber III died from heatstroke, officials say
Marion Barber's cause of death revealed after former Dallas Cowboys running back was found dead in his apartment
Parents launch nonprofit to educate about heatstroke dangers - ABC News
How did Marion Barber die?
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Texas medical examiner: Marion Barber III died from heat stroke
Former Dallas Cowboys star Marion Barber III died from heat stroke: Medical examiner - ABC News
Cowboys Star Marion Barber III Death Reportedly Due To A Heat Stroke
REPORT: Former Cowboys Star Marion Barber Died From Heat Stroke