among 933 children aged 4--6 years between July 2010 and August 2010 in 16 child care centres from Seoul and the Gyeonggi province, which were metropolitan city and the most densely populated urban areas in Korea. Child care centres were randomly selected from among middle-class homes of average household income in Korea. This study was conducted as a government-funded programme to perform standardised measurement of the prevalence of allergic diseases, and related factors, in preschool children.

Parents of all 933 children completed a modified International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire. Of this, 900 children whose parents answered the frequency of lifetime wheeze were eligible for inclusion in the study. The questionnaire was based on the Korean version of ISAAC.[@R6] Key questions included the history of symptoms suggestiveto London aged 19, where she studied at LSE under false name Rose Ladson and with protection from Scotland Yard.

She chose the surname Ladson because it was the name of her great-grandmother from South Carolina, US, while Rose was picked because she’d been given the nickname Roschen as a child. Prior to her escape, von der Leyen was studying in Gottingen, a university town in central Germany where the group had strong support among radical students.

However, in a 2016 interview with Die Zeit, von der Leyen revealed she didn’t spend much time actually studying while in London.

“I immersed myself for one year in this seething, international, colourful city. For me, coming from the rather monotonous, white Germany, that was fascinating. London was the epitome of modernity: freedom, the