Dr Wolfgang Goebel (1932-2020) trained at the university pediatric clinic in Tübingen and at the Ita Wegman hospital in Arlesheim, Switzerland. He co-founded the pediatric department at the community hospital in Herdecke and was its leading physician until 1995. He also facilitated conferences on immunisation and related topics.

Dr Karin Michael is an anthroposophical pediatrician and Head Pediatrician at Herdecke Community Hospital in Germany.