Is being overweight a causal factor in better survival among the oldest old? a Mendelian randomization study - Duan, Hongzhe; Arbeev, Konstantin; Holmes, Rachel; Bagley, Olivia; Wu, Deqing; Akushevich, Igor; Schupf, Nicole; Yashin, Anatoliy; Ukraintseva, Svetlana (Frontiers in Aging, 2024)