Response of leptin levels to short term feeding and fasting in man, influence of circadian cycle M. Romon, P. Lobel, C. Le Fur, J.L. Edmé, B. Hecquet, J.C. Fruchart, J. Auwerx and J. Dallongeville Reprod. Nutr. Dev., 38 2 (1998) 195 DOI: 10.1051/rnd:19980219