Cerebrospinal fluid haptoglobin levels and outcome after aneurysmal subarachnoid haemorrhage: Evidence from Mendelian randomization - Gbenga A. Kayode; Loukas Zagkos; Godspower Oboli; Sonya Abraham; Gregory Kato; Quazi Ataher; Evangelia Farmakioti; Lothar Tremmel; Stephen Burgess (PLoS ONE, 2025)