PT - JOURNAL ARTICLE AU - C Meadows AU - F Monsell AU - A V Ramanan TI - Normal <em>x</em> rays in Perthes disease AID - 10.1136/bcr.2007.132811 DP - 2009 Jan 01 TA - BMJ Case Reports PG - bcr2007132811 VI - 2009 4099 - http://casereports.bmj.com/content/2009/bcr.2007.132811.short 4100 - http://casereports.bmj.com/content/2009/bcr.2007.132811.full