Authors: Richard M Martin; Jenny L Donovan; Emma L Turner; Chris Metcalfe; Grace J Young; Eleanor I Walsh; J Athene Lane; Sian Noble; Steven E Oliver; Simon Evans; Jonathan A C Sterne; Peter Holding; Yoav Ben-Shlomo; Peter Brindle; Naomi J Williams; Elizabeth M Hill; Siaw Yein Ng; Jessica Toole; Marta K Tazewell; Laura J Hughes; Charlotte F Davies; Joanna C Thorn; Elizabeth Down; George Davey Smith; David E Neal; Freddie C Hamdy Journal: JAMA Date: 2018-03-06 Impact factor: 56.272