The video questionnaire: one approach to the identification of the asthmatic phenotype.

@article{Beasley1998TheVQ,
  title={The video questionnaire: one approach to the identification of the asthmatic phenotype.},
  author={Richard Beasley and Christopher K. W. Lai and Julian Crane and N. R. L. Pearce},
  journal={Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology},
  year={1998},
  volume={28 Suppl 1},
  pages={8-12; discussion 32-6}
}