DOI: 10.1111/jam.13585 , PMID: 28910512 Issn Print: 1364-5072 Publication Date: 2017/12/01 Print Facebook Twitter LinkedIn Email Differences in staining intensities affect reported occurrences and concentrations of Giardia spp. in surface drinking water sources K.A. Alderisio; L.F. Villegas; M.W. Ware; L.A. McDonald; L. Xiao; E.N. Villegas + Author Information Author Information: New York City Department of Environmental Protection Checking for direct PDF access through Ovid View on Journal Site Abstract Abstract unavailable for this article.