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Jonas W, Johansson LM, Nissen E, Ejdebäck M, Ransjö-Arvidson AB, Uvnäs-Moberg K.Jonas W, et al. Among authors: nissen e.Breastfeed Med. 2009 Jun;4(2):71-82. doi: 10.1089/bfm.2008.0002.Breastfeed Med. 2009.PMID: 19210132