title: National crash call number is needed.
authors: S A
authors: SA
authors: Beshyah
authors: R
authors: R
authors: Schiff
authors: F S
authors: FS
authors: al-Jehani
mesh_terms: D016887:Cardiopulmonary Resuscitation; D006323:Heart Arrest; D006801:Humans; D010348:Patient Care Team; D013689:Telephone; D006113:United Kingdom