(24)Whereas to this end some Member States have adopted specific legal provisions; whereas, to protect the general good, it is possible to adopt or maintain such legal provisions in so far as they do not unduly restrict the right of establishment or the freedom to provide services, it being understood that such provisions must apply in an identical manner whatever the home Member State of the undertaking may be; whereas these legal provisions may differ in nature according to the conditions in each Member State; whereas these measures may provide for open enrolment, rating on a uniform basis according to the type of policy and lifetime cover; whereas that objective may also be achieved by requiring undertakings offering private health cover or health cover taken out on a voluntary basis to offer standard policies in line with the cover provided by statutory social security schemes at a premium rate at or below a prescribed maximum and to participate in loss compensation schemes; whereas, as a further possibility, it may be required that the technical basis of private health cover or health cover taken out on a voluntary basis be similar to that of life assurance;