I don't think that would be correct. The proximate cause of death is the paper cut and that could be legally important. Imgine that you know someone with hemophilia and you decide to kill him by giving him a paper cut. I don't think you could be charged with the murder unless the cause of death was ruled to be bleeding to death due to the paper cut and that you knew it would kill him due to his hemophilia. If the cause of death were ruled to be hemophilia, you couldn't be held responsible for that. Hemophilia itself is not a cause of death, bleeding until you lose enough blood to die is. The bleeding would be caused by the paper cut.If someone who has hemophilia dies after bleeding to death, we don't say "cause of death: paper cut", we say hemophilia is responsible for the death.