 calcium antagonists in aneurysmal subarachnoid haemorrhage](pano000000.f0_default){#fig0}  ![**Fig 0** All cause mortality with intravenous immunoglobulin for preventing infection in preterm or low birthweight infants](pano000000.f0_default){#fig0}  ![**Fig 0** All cause mortality with transarterial embolisation in unresectable hepatocellular carcinoma. Only the effect estimates from each trial were retrievable for the corresponding meta-analysis](pano000000.f0_default){#fig0}  ![**Fig 0** Mortality with antioxidants for preventing 