PubMed PubMed Physiol Rev 2004;84:277 PubMed PubMed PubMed PubMed PubMed PubMed PubMed PubMed Brown adipose tissue PubMed PubMed PubMed PubMed PubMed PubMed PubMed PubMed PubMed Brown adipose tissue PubMed PubMed PubMed Physiol Rev 2004;84:277