A study on OPG/RANK/RANKL axis in osteoporotic bile duct-ligated rats and the involvement of nitrergic and opioidergic systems - Amir Hossein Doustimotlagh; Ahmad Reza Dehpour; Shahroo Etemad-Moghadam; Mojgan Alaeddini; Sattar Ostadhadi; Abolfazl Golestani (Research in Pharmaceutical Sciences, 2018)