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Meissner HH, Santiago SM, Koyal SN, Riemer A, Stein M, Goldman MD, Williams AJ.Meissner HH, et al. Among authors: koyal sn.Respir Physiol. 1999 Jan 1;115(1):95-101. doi: 10.1016/s0034-5687(98)00100-5.Respir Physiol. 1999.PMID: 10344418
Baum MB, Koyal SN, Klaustermeyer WB.Baum MB, et al. Among authors: koyal sn.Ear Nose Throat J. 1998 Apr;77(4):286-8.Ear Nose Throat J. 1998.PMID: 9581395Clinical Trial.No abstract available.