Intramuscular short-chain acylcarnitines in elderly people are decreased in (pre-)frail females, but not in males. - van der Hoek MD; Nieuwenhuizen AG; Kuda O; Bos P; Paluchová V; Verschuren L; van den Hoek AM; Kleemann R; Veeger NJGM; van der Leij FR; Keijer J (FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 2020)