Intervention: All data were collected by means of questionnaires and treadmill exercise tests.
All data were collected by the clinical database in use in our Centre.
All data were collected by co-author O.M. in her office in the participants' choice of English or Arabic.
All data were collected by the first author and three research assistants (always under close supervision of the first author; see "Acknowledgements").
All data were collected by patient completed postal surveys at baseline and 12-month follow-up; differences between baseline and 12-month follow-up were compared using a paired t test.
All data were collected by one person (NPP) and cross-checked by a second person (JPT).
All data were collected by patient chart review; ID study physicians did not have patient contact in the context of the audits.
All data were collected by WD.
All data were collected by field workers using smart phones.
All data were collected by the first author.
All data were collected by DV, MP and ADH.
