Prevention of Methylprednisolone Acetate-Induced Osteoporosis with Calcium Administration in Rat Model - Ragerdi Kashani, Iraj; Moradi, Fatemeh; Pasbakhsh, Parichehr; Sobhani, Abdollah; Nikzad, Hosein; Sobhani, Aligholi (Acta Medica Iranica)