He had a private practice in Christiania ( Oslo ) from 1911 .
Early in his career , he was district physician in Modum and deputy consultant in pediatrics at the National Hospital 1911 -- 1915 .
district physician had a private practice in Christiania ( Oslo ) from 1911 .
Early in his career , he was district physician in Modum and deputy consultant in pediatrics at the National Hospital 1911 -- 1915 .