Mendelian randomization inverse-variance weighted estimates for effect of genetically-predicted body mass index (BMI), type 2 diabetes (T2DM), systolic blood pressure (SBP), low density lipoprotein cholesterol (LDL-C), smoking, urinary albumin-to-creatinine ratio (uACR) and estimated glomerular filtration rate (eGFR) on the outcome of pre-eclampsia or eclampsia.