1. Department of Anatomical Dissection and Donation Medical University of Lodz Lodz Poland
2. Department of Orthopedics Surgery Hospital Santa Cristina Madrid Spain
3. Department of Human Anatomy and Embryology, Facultad de Medicina Universidad Complutense de Madrid Madrid Spain
4. Department of Histology Chair of Anatomy and Histology, Medical University of Lodz Lodz Poland
5. Twin Cities Orthopedics Edina Minnesota USA