Back in Denmark , he first opened Frydenstrand Sanatorium in association with the Adventist Church 's folk high school in Frederikshavn .
Ottesen 's inspiration came from John Harvey Kellogg for whom he had worked at the Health Reform Institute .
Back in Denmark , Ottesen first opened Frydenstrand Sanatorium in association with the Adventist Church 's folk high school in Frederikshavn .
Ottesen 's inspiration came from John Harvey Kellogg for whom he had worked at the Health Reform Institute .