@misc{indiciae9932d3ee7a0b, title = {[Maxillary antrum surgery with or without bone lid formation. Retrospective comparative study].}, author = {J Portugall and F Khoury and R Becker and G Habel}, url = {https://pubmed.ncbi.nlm.nih.gov/2598507/}, note = {Source identifier: 2598507} }