PT - JOURNAL ARTICLE AU - Satvinder Kaur AU - Ketan Kulkarni TI - Osteopetrorickets: a twin paradox AID - 10.1136/bcr.06.2009.2012 DP - 2010 Jan 01 TA - BMJ Case Reports PG - bcr0620092012 VI - 2010 4099 - http://casereports.bmj.com/content/2010/bcr.06.2009.2012.short 4100 - http://casereports.bmj.com/content/2010/bcr.06.2009.2012.full