The wearing of bicycle helmets and attitudes towards their use vary around the world. The effects of compulsory use of helmets are disputed[1] (see Bicycle helmet laws). Four countries (Argentina, Cyprus,[2] Australia, and New Zealand) currently both require and enforce universal use of helmets by cyclists. Partial rules apply in some other jurisdictions, such as only for children (e.g. in France), in certain states or sub-national divisions (e.g. British Columbia in Canada), or under other limited conditions.[3]