CINXE.COM
Just a moment...
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "www.journals.uchicago.edu",cType: 'managed',cRay: '929172c92b81fd06',cH: 'o5XG7cxyrk5opx9ofH4iu8JauIUuwy.IoMSLchrTwMk-1743440902-1.2.1.1-0MMjXEUO4dVJA6km_ZWyjIi1YuySXg8NWqYeO56czIIt7Hp.SkFpYKSU8uf0M1bc',cUPMDTk: "\/doi\/10.1086\/303243?__cf_chl_tk=n.H8LPMzj0G_KFjt9XxR3a7zIy5AU26TCFrB93TrCDI-1743440902-1.0.1.1-nAC4wt3cKySBBB_PkROhfd3scxw6kksrfk1dmgu8W5s",cFPWv: 'b',cITimeS: '1743440902',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/doi\/10.1086\/303243?__cf_chl_f_tk=n.H8LPMzj0G_KFjt9XxR3a7zIy5AU26TCFrB93TrCDI-1743440902-1.0.1.1-nAC4wt3cKySBBB_PkROhfd3scxw6kksrfk1dmgu8W5s",md: "TzaiITlz_IaBnh0oMx2E3MJBLQtmXINi7dcOzVDueug-1743440902-1.2.1.1-kcIRE5oelPanwsP8ndNH1CWfBVpzyK.paDVFUucEGu_txNahHUbg1f_ZY5K40olkFef5H3qebRC3.zKOhGtHGNHZMo6XlNCIEYndAYwyqVa.OD8nQpL_FFXI55Xf.oSBppphpHtM1IxXAdLkR7K0svHKfuccop2BvGigiIUIX0fAYMX6K.mmi7GHBS6Phh8Espos6B7vFVK7qqyueEvg79ScySGq.W.iiBdiY5KllmexVVpS7Br0W0nbF4NYo8wkC0BbgrSlyDudww8V28zUn.nxk__UqvgRBKKIGfyUeU7_EFJZRSzMuIg_.SFC3gOsst39ZWuqz02chRxNkHQpMa3WFp.DzP8KOLye6BUQBaOF9c2mM.dGWHsKekg8kUo5y6CPI3wCAEGLakUftK1cHjq0iLshejckQnLYf.PBCknD7kEU88eh0ZflZ_thFOkQoxULbp1HU4hgGKlSFOOGm3QoMlUEOw6XVnUfb_u3j3ZQ3Q5sWsqHDI37uoqUPTvNUVlr.Sm8tsBxDHj1VcxN4Tupy4VPvZyArGjEd_WyFtzYYdYQYBrrpMIZfG4SrOUF1pIAQzPWU6qZNrBW65Y.YsblgTkGRb9xufYdNBjUMxfPp6WCHjI_6fO8XzewM_ifVFGiF9YuIgLjuGOEmyZwhx9zrPfmfF8ywe2fQJPY_8MGWWxcSZKDtARtR35Ej1FAC_WRDNkqWrVHmeJ2JjF6gM8Y4.sNWJN1hxLDRVU8vqaDbo4KYjbNazHn6pOkh2JPK7V2kqDqGce6t3AeDZDM2zwkYlLLI3k4.mIxf5TmpAU.x50KrYjP7b0QEkHgiNjEzt_VQXa8.ULaDsWV_rUi_obcgqu5dxBr0bOPUu2Y9KzE8tXqF_fi1r32edC1k2zcyGxx_nbDPf5qupdhugXK0hjM7dqf4WfHQQRBRvzM2Xi4F1oKxp5CgXZauP3EhWOfFAI.ExudIhCcDq1eFdawm3qVgBkobR.Otlq1uabDyT_aJMo6CQcccbLrSRfXLemLffIUic03cvBk7jm1PyqEBNqjwPQ9bDZEef8g48mh14hLMC.aOwAhWTjHuDyNKkl0myi10P2cmLkhigQvuDHP5i1djk9eUX7bANucquGjFIWOTyULlBnNkcBtNHlGe8jPbiOoUD.8NyH.5iajWV7zKyoN_h3bEUBzHm1.2CG8bSY3wU93aPfXikYx10axanOisgxjTO_3yoLDt90BjU3wrAB64do86Nu9KB0jXMR39iOiFGs.4h7T42Y0xG5fa_n0",mdrd: "yYa2ts1lsdssZoIOc0IvvpL.dThWR2nrs7.JLPWgfYA-1743440902-1.2.1.1-zzbGPTxu7IsHfnG6UkrpSwRniXWKworWqaXRP_O4yIzvrvvBxuppOmCuaiDTJCFbiwlGuFB.vwOqxe2ja2ljBJjpiNahHMIbhHRZhRIUfQLlu_iwkTTxDHDe_XC_FycPCI3vV.wt.tgwfVSULUKimovjAJR3ZfKppTkkabfql3bGGtiGzYU3BAteVz1p3KLiuZJc9xFwzzzE6SVWkEfE6xdJCTZ5B7_VN8gM1RtMu3NSFtZrfltUywb0CQL6DKSsiSqRVCScDRbP28U5TdQaQO8zT6nI.9Dpsv0VD7aWamQpviumL_j.UmFguWl5vURVwyJo0tMfMU98pt9aMpnReJRlFKRDfx3fAUiUqGDMl3AyDt_U1GvwRhzVADhax3O5NQ50oPrS0jHKq126QiV.2BrAZs3.Ud5ce9pklp0ZAeSCRKc8jEgPXb61.EEpBfZGWLe.m.nQkD2reS12fiEesue2cOjOx1Z68iYD23PmVHAYvWG7umKFNS5QWRsexZok1BVhCtvPUZcxlHJG20H5S2bBnGGU.VxsCj.ImQDe727JPuWSET0cQydUB6CeSLS3nJsVtbtda50aiUBbDVyKWzNA1suUR5okkl_ow7KAc.lYtKCxvSTxSvM2z5LYJgxARn2_7VH7m6_4j1z2uXGSHyvezPQ1ROFVYmX1h1eUkCy3uZ8iY9958tBzDzeSavaX67XKAlBjvtGSwmFWpV6HtYoC3SQTasm7yX6X3NE5B_NQUxAeTllyrfkptCCz7WpnjoqHqm25UeJUtKr882ohPS0tlfAWVT28CWFkkEinly.Oi4waq35otHwkqRE3wTRbGdRAoXKlSBn0Jx.Xqh3q7JB1Zj_MCDZgIJic79gWtsBxuk1G1_b3HShOvlXeN_9zjoNDE67kB1c26aGa7ZQyCXMty_jx5ygCsTFcNR054KJh2kLkw7ZcbpvIU6LaJgbEVbN_UAF_MTW5Jfvl9pRW0BMovNFVB4XHxVEslXurAkyLSc4X8NnKFJy.eUAQgEG.hINi7NpRLLn9YslNnjrhBU9ngmG8qD.tUXJ3KTnZSuzIFo_hMNvwFtLouc0HWRFGXorpiBwlc5B8VUzMfyREJSbEf5FNO9MRBseMtzYU6DdaPGaJvH.jfkXp0OhknAf6E052toy1DNEBWCDPJwFBT7B1d18595rBM5QCu.cnZRlWFPoA5V5g_io13uL4qB3mb2ADftyMxJ2vx5jNx.UpXdrEdKwEvO5ehKmOfZA5eWrKpw_g3jA_A.5Rc0YcaUJwIuYT2gI1fBGN975TFuwN5sZ598CoR7Rk1jNvoybk.LStPigPrjO8TjbhAj.3MqXsq7LevxZwWUwu_H2FXi3IJoiy.tDqOml9HIWFx2Ic3Wz861tpZwCqbIcT7L5tWUhEngmDTZ6gDnjC6lOG8eo71eehh78p0VtIdwvtzQU_D1kA67p_ctDlYVIcomMbYqx0k8MXX.Xm8s0XVWGY3yGFU.CSu2_5i5TQDm4uGE2I4G9g12Ifk0EuNQtq.kUFFE8pt0WczdIc8z5qxIThUrXu3PlTrRi6BNG3KKlp.ooSI5iv9vvHHquhJZAZc6hdTm8fKxELk89YLGNsP_O1kOSkmn83befMhiZZjvchlqgB3fPBwQHf8LZEcgxS29FY3PMXr5Hopef6F54Mu6j7IAxhKa9FmtEFu1ZQCL8OKmRe2kZLGryun3j7lGEvNQZ40C72PzfZ7SI3x2ebspkr8r4Tv5dHsWSxAzPz9Nt2wpGyIh6wkp.KuI5y_9X4Q_wHazQ5v31jWOXCNaQ9FGexXLKe4vGtvmja.Ed.VizpXcYTbZ1_QZ0muW1B8GlTsfsw204cy9x1zDINxw_T1GgZPx5v44BQgZEqgjD1zu9aGdesOnPHMiual5.rTbDvNCK3ZO4xF8gSqIFWhQG5LWH4cQpenN6x7PH6oKOIlaiviKAlnPiHRSUsWjLgzj4bEgASQDtn6WGgubLYh6rNe_LVIHoovsGTLP2H0VflIQYjEvOv7IABB0gIIvLhzgV5jp05Q7c6kSIwoNPXJoviXrZtOcJwmzhOyfwhkRN_.KSFTMuXoVM"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=929172c92b81fd06';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/doi\/10.1086\/303243?__cf_chl_rt_tk=n.H8LPMzj0G_KFjt9XxR3a7zIy5AU26TCFrB93TrCDI-1743440902-1.0.1.1-nAC4wt3cKySBBB_PkROhfd3scxw6kksrfk1dmgu8W5s" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>