Grace MallampalliThe Ohio State University College of Medicine, Columbus, OhioKeri StrebyDivision of Hematology/Oncology and BMT, Department of Pediatrics, Nationwide Children's Hospital, The Ohio State Univers
We weighed filters before and after sampling using a Mettler MTS microbalance (Mettler-Toledo, Columbus, OH). We estimated air exchange rate (AER) in each unit using perfluorocarbon tracer gases (Dietz et al., 1986). Perfluoromethyl cyclohexane gas (PMCH) was released continuously from sources ...