00576nas a2200169   4500000000100000008004100001260001500042100002200057700001600079700002300095700002600118245015400144856007200298300001400370490000800384022001400392       2018                            d  c2018-12-011 aRebecca L. Morgan1 aPaul Whaley1 aKristina A. Thayer1 aHolger J. Schünemann00aIdentifying the PECO: A framework for formulating good questions to explore the association of environmental and other exposures with health outcomes  uhttps://www.sciencedirect.com/science/article/pii/S0160412018302046  a1027-10310 v121  a0160-4120