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Perthes disease: What is it, Causes, Symptoms, Diagnosis
Perthes Disease - Legg-Calve-Perthes - OrthoInfo - AAOS
Legg-Calve-Perthes disease - Symptoms and causes - Mayo Clinic
Perthes Disease (Legg-Calve-Perthes Disease) - Johns Hopkins Medicine
Perthes' Disease: Symptoms, Causes, and Treatment - Patient
Perthes Disease | International Perthes Study Group
Legg–Calvé–Perthes disease - Wikipedia
Legg-Calve-Perthes disease - Diagnosis and treatment - Mayo Clinic
Legg-Calve-Perthes Disease | Children's Hospital of Philadelphia
Legg-Calve-Perthes Disease - StatPearls - NCBI Bookshelf