1. Department of Cell Biology and Histology; UFI11/44, School of Medicine and Dentistry; University of the Basque Country UPV/EHU; Leioa; Spain
2. Department of Cell Biology and Histology; School of Medicine; Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Espinardo; Spain
3. Department of Anatomy, Pathological Anatomy and Histology; School of Medicine; University of La Laguna; La Laguna; Spain