As with other dooring statistics, even fatalities are often under-reported as, for example, secondary collisions after door avoidant swerves may not be recognized by authorities, the media, witnesses or perpetrators as due to a dooring incident. Also, in some jurisdictions, dooring is not officially considered a motor vehicle collision if the vehicle is parked. Informal logs of dooring fatalities based on found media reports have been maintained on the internet. An annotated, international memorial spreadsheet with entries from 1987 to the present is currently maintained by an American cycling safety advocate.