Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePosing Causal Questions When Analyzing Observational Data-Reply.AuthorsGoodman, Steven N.; Schneeweiss, SebastianSubjectsSCIENTIFIC observation; PHYSIOLOGICAL effects of estrogen; MENOPAUSEPublicationJAMA: Journal of the American Medical Association, 2017, Vol 318, Issue 2, p201ISSN0098-7484Publication typeletterDOI10.1001/jama.2017.6235