Long-term prospective and controlled studies demonstrate adipose tissue hypercellularity and relative leptin deficiency in the postobese state. - Lofgren,P.; Andersson,I.; Adolfsson,B.; Leijonhufvud,BM.; Hertel,K.; Hoffstedt,J.; Arner,P. (J Clin Endocrinol Metab, 2005)