1 The Orthopaedic Research Institute of Queensland, Townsville, Australia; Universidad de Las Palmas de Gran Canaria, Clinical Sciences Department, Las Palmas de GC, Spain. Electronic address: sergio.barroso@ulpgc.es.
2 Hospital General de la Palma, Orthopaedic Department, La Palma, Spain. Electronic address: mfp1189@hotmail.com.
3 Hospital Virgen de la Victoria, Orthopaedics Department, Spain; Orthoapedics Department (Spain), Campus de Teatinos, S/N, 29010 Málaga, Spain. Electronic address: marta1013@hotmail.com.
4 The Orthopaedic Research Institute of Queensland, Townsville, Australia. Electronic address: research_coordinator@oriql.com.au.