Pneumocystis carinii was the causal agent in 11 (8%) patients.

While recoil of the barrel must occur, as described by Newton's third law, it is not a causal agent.

This is complementary to either removing or reducing the patient's exposure to the causal agents.

Whether events are favorable or adverse, responsibility for them can in principle be attributed to a causal agent.

Until this time, rabies was thought to have a single causal agent.

Testing of other munitions continued from 1943-1945, including tests using the causal agent for anthrax.

They are causal agents motivated by psychological rather than social concerns.

So there is still some causal agent, it is just further removed from the ultimate effect.

The therapists attitude is also a very important causal agent in positive patient change.

Currently, the causal agent is thought to be a mycoplasma-like organism.