Some jurisdictions require licensing or certification. Parents may also turn to independent rating services, or rely on recommendations and referrals. Some places develop voluntary quality networks, for example in Australia most childcare services are part of a national Quality Assurance system. Some places require caregivers to take classes in pediatric CPR and first aid. Most countries have laws relating to childcare, which seek to keep children safe and prevent and punish child abuse. Such laws may add cost and complexity to childcare provision and may provide tools to help ensure quality childcare.