@misc{indiciae787e951a63a7, title = {Letter: Chronic sinusitis.}, author = {A G Zermansky}, year = {1974}, doi = {10.1016/s0140-6736(74)92740-8}, url = {https://pubmed.ncbi.nlm.nih.gov/4131997/}, note = {Source identifier: 4131997} }