Authores contributions:
ILN: Study design, interviewed patients, data collection and recording, treating HAE patients, writing of the manuscript.
AR : Head of Angioedema Center, treating HAE patients, adviced and guided, assisted in writing and reviewing the manuscript.
RS: Academic supervisor of the study, guided and approved the results, reviewed the manuscript.
HG : Helped to design, assisted and supervised the study, reviewed the manuscript.
All authors : contributed to the drafting, revision of the manuscript and providing their final approval for submission.
Word count: Abstract: 250, Manuscript body: 3490