Alm, Jessica J, Tatu J Mäkinen, Petteri Lankinen, Niko Moritz, Tero Vahlberg, and Hannu T Aro. 2009. “Female Patients With Low Systemic BMD Are Prone to Bone Loss in Gruen Zone 7 After Cementless Total Hip Arthroplasty”. Acta Orthopaedica 80 (5):531-37. https://doi.org/10.3109/17453670903316801.