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Li Y, Ley SH, Tobias DK, Chiuve SE, VanderWeele TJ, Rich-Edwards JW, Curhan GC, Willett WC, Manson JE, Hu FB, Qi L.Li Y, et al. Among authors: tobias dk.BMJ. 2015 Jul 21;351:h3672. doi: 10.1136/bmj.h3672.BMJ. 2015.PMID: 26199273Free PMC article.