Evidence of a causal relationship between body mass index and psoriasis: A mendelian randomization study. oleh Ashley Budu-Aggrey, Ben Brumpton, Jess Tyrrell, Sarah Watkins, Ellen H Modalsli, Carlos Celis-Morales, Lyn D Ferguson, Gunnhild Åberge Vie, Tom Palmer, Lars G Fritsche, Mari Løset, Jonas Bille Nielsen, Wei Zhou, Lam C Tsoi, Andrew R Wood, Samuel E Jones, Robin Beaumont, Marit Saunes, Pål Richard Romundstad, Stefan Siebert, Iain B McInnes, James T Elder, George Davey Smith, Timothy M Frayling, Bjørn Olav Åsvold, Sara J Brown, Naveed Sattar, Lavinia Paternoster