... the spouse (or registered life partner or live-in partner in a joint household), the children (stepchildren, children-in-law, grandchildren, foster children), the parents (step parents, parents-in-law, grandparents, foster parents), the siblings and brothers-in-law and sisters-in-law of the insured person; in the case of registered life partner or live-in partner in a joint household also their children, parents and siblings.