Muscle Type Dependent Increase in Intramyocellular Lipids during Prolonged Fasting of Human Subjects: A Proton MRS Study - Wietek, B M; Machann, J; Mader, I; Thamer, C; Häring, H -U; Claussen, C D; Stumvoll, M; Schick, F (Hormone and Metabolic Research, 2004)