letter 2022 Concerns on ranibizumab and zoledronic acid safety for experimentally treating women with endometriosis Archives of gynecology and obstetrics ·doi:10.1007/s00404-021-06390-3 Correspondence to the original research entitled "Effects of ranibizumab and zoledronic acid on endometriosis in a rat model" published by Ozdemir et al.