CINXE.COM

<!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: "n.neurology.org",cType: 'managed',cRay: '8e7349104b3feb9e',cH: 'DjeZ.jaWUJ64145Nm_UKakqjLEjxLVXqYyBq6yMLiHM-1732387202-1.2.1.1-vYkqKHoIP0KY0DtUARTaOhq8ujEc4fFQJrEfq0AzBsjHF5UwKGy4o7UxE0IVT.eq',cUPMDTk: "\/content\/95\/20\/e2755.abstract?__cf_chl_tk=rCPdOmmSpES.YhEJncMlYdZkzh5kgDKRc8Ss.0OWALk-1732387202-1.0.1.1-h0G.uablfYPCRGEz8dw44sdFdpM9XSRkuqcKoChV.9g",cFPWv: 'g',cITimeS: '1732387202',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/content\/95\/20\/e2755.abstract?__cf_chl_f_tk=rCPdOmmSpES.YhEJncMlYdZkzh5kgDKRc8Ss.0OWALk-1732387202-1.0.1.1-h0G.uablfYPCRGEz8dw44sdFdpM9XSRkuqcKoChV.9g",md: "SOLeJCFKVuGm3UrzFaOeMskeEVl3GPMHR.wPbWAchHE-1732387202-1.2.1.1-pRVMiXJgbQGXb89ZN7M4QIoNIuDAOSKb_Yu.exk_PqhAww7pn.CmbZhlLlfaBPDhZtJVtsYuHRAluQJpNLr.2rz.OVY4Uyq6KYJdgyQd7NBD0MVE1J7lph4rHU7PAGDcwfSQ5Zk3KB_VYBlbfsZChicc.rI1kcflySS5tNiEtC0KV0gufGJ9w_hjSqTcHA0Xg0M4A.nRiEiRCaCEU5vBLZhIlqUzwC1p4F0vlQeiitzaERpJ54wsdnfDlI7GkmRPXYOF4Gjgphqfe_CkZsI.8YFX6Wtj3G62_nf_9Qcu9KWRuY3tmJVG0mQ2Tqhva2xfgYKB6sMpPQhSTviPdGgtKR2gjZpKgaUrTshkYAbut1qsqaim0tlcJpgtQiU4.GyzBLXcSyL7mv2Tk1KK.pP8.fSsIYf8AVdplkXY6p3zCyCWH.3maVMUh16u1l29vBLjuolyGBn0_6adEetgundjtLDsrePgI3F7bzdnfLbDHOD49PJ7JGeVuQQf7nMTPWCQO8B5XdXuDKZ0BQTvOrWCe3XmPAl1yTALwL1CwoGQMV_6k4IoVNBM6n1ewpXh68qf6iE1TIlKH4TgSnqqjEYATwJ6o1wns65xsXOkeh1HC4.l2JI4RIhknKfkRuF.sVw1oUc2cPhsB3PzSvCJcuZcgoAIg93Sqo1VWcjl58CHhpYFKAAc8INFWrUPtd1GOHkpd35RtUTjGHiDLbT8vzNz62C6FnT_9wEFTkxw779u0lXOFJxI06pCV7akD2COsioh.huSg9aib_GxPH1PVXQrMkb7uy_ozRxFQ3vZLz5V0Cu_jOWmlVk3pIkS2rBh0nJt14xUp0kE08WTJjEwqyH8JiKlepPDC.iRs_kOEWD7SptBWJRDhMTSYeq42HJELGar2gBifn0OUVabOjFuashAT6wp7JYIXEQR7wXVDcdKPrLiTUOZbcEq24Ilhkd_i8Mtn4yDuyt0RagXHWmWXEFF8DYvlS1pTCRvoQYUlnfnYF9rs6TRTH.gRPVGGtCRCad8Eq_RRjXz6.boHtQYE2d.wkr0qBn7Ggzx_pwuXctdP3d17MX0aahPFHLQ2dIWUUpGP.pqv1OQA0XZWrE9hm0vXwEDb1SFjuh1hxh5q0KYp802iMeYcE54A7.2HsTuXtit_TgQh56CYgDehzbrIM8w5OlwECe3wFF6ZQZMVTQ14Bdvi5uzVKQx7jHE.k_DQpbphPDLvEsDti0xFsACsmtqJ0hpC0fCT5ZXdfhMAf9sUQKm.0z6eWyCshVags1.bmkkZlOc39RFdndihK6qk0Nu2lSrl6nYhl_KCodNICa6nRjmEqfYxrSoYzW7PyOGwxcc5KICRDVWE_ISTZ7CIZZaj.LyQo6ag0puiJD7PFTbubXxppsndEmOCfTW_GcUauYA9yh3QOofxgm0WADGPCjQAuLw0XChuxFLLN_AO5nzQleRfQm1ys4F0iCqktkfHsNICiuj8FvrD7HpvAD1DpFuw5fmlDqfH2ZF1JD2ZBpHEx0Og7HlQSvF5rdyfOr1gwpsOiilGdN6rNtwZPcQryTa.c7ZEb4hzS2aL8uGljbp2We8CRwT2IJnP0GwDTzbry9dFernxnooPqysD0SqiGsL7g.Ghmq7LYoLb85NN.VOKIP2N2ircHXYtninQHPa_qSSt2A7Mhk7zdF8csdDgLMy1dqiX0dqzG2YDdg2B3I_C_m2QfvTjbzwYjQ_qqQTf5YR9CFIKxwjzDsj09rvybmIr_ViUhN9lrgWeOhvyRTvkNIoghgcbAPDhO1VdA87wBgsmIaaQiWzM_g5pC.72HKMAvq4jTT8HrlE9LceES0U8JijAgXNSILGbkFu12yKwv5mwW6BsOiQGo.D6P581gnFPsiEzKIqelHWFvrkmXQpas.BVJJWrxjikwwXUb8zCr9G5UX_qP74E4Z8PcE1RFEt.AzngksI94U.lDWpgv8ybx0x.VtxTjBTNzEQgvzsYza.ukjzePchCyWeJsEMoLE7wNv0yxfi.Zy0jSJ4liHg9MCB44GPqDDh9zZd9HW85McuOzkA_Cw.2eQCRIgkoE331MOZf_JYxIvlJWThAjzjQ2_eYsNZZU0hFPbMhm16eL9cZoJz8jWXNB0B9vIjWzqibduh17IBryUnMG1Qi196U5GE7fh7YHwPrMVepYLzKOQ9EZ_T0WPtafkxceMkGo91krwutFMKGHl0g95l4Ww00PoCuVgVcMU2QFk8zVMSFjHENZnin4Jw5HEC.XEBxyYeeDPApocDeNJqTCMTakcGd_PKqJu7Wm9TKll2zgpUT5aanokOFt2XmjsaHYkhXa9cQIj7VCiZ9MISKHCbVJh24fGHX7gvwqdV.Tc.VElWNRMX1jywcvKYnhIpJ9lKCxw.jRXbJ383qr4iJEyoQ3SGp3twrrB783W9sSQTFEoD6qGvq5ihGYNm6oAgf2.GJUjSaTv732kXc9v.bjJiGTgjKKq6qmBu6YW5TmhdyEgPaH0O3W9PwMEaZDBLNhEdCuMx6JVFb13FLScrch1.VE6f_AqNH4P99rZTOnHenCmRfVlz8nRKWJ4rdCgV1BPuujBgtcBrCPsXrnz6OvzHKnnEYpn2iMuAvHoDhjp3PsIBXiXUvlJcOjMB7sm4.KqeW51Nrbwp29SaiKnPA.6wDoetwfnlmNtS.MADfFZsKLIkUrBEYdqtao6U.2tq3rGNizfz9okreZpDT3YqCg7aPD4uRLW2ULny0wWalKF2zyTQC84enV6R9ywfeec08HmvJ9HdUiajZydoaS59TAiPh958xGj_p_SGkAKgZ.IuCJdsLrKnhN4aKXiAMPnqjPgsB8LJPinRzHRufQa.OPGpqgglMC9McjwhNUUmkgHkLac0fU8NuGFYXuaObsxBQlVD0MDdQQwcA_4GTGfn3X6s.xAcXspqU90ymUxxbxL1PEdLYVaMkJp6Z7NhQVv2iYv1IV0pphI874NvIaG9g0eRRGbIAbk",mdrd: "1EUwbmxpf.MGXuLhOH7D2wGjN3W7SG0fWp9YCX2Vt7w-1732387202-1.2.1.1-5BUDVMLuPThnzt.2oIeZZ9IuTeDEpyyTZjH88czffrKWYqoYYOJX2ITRE9GqfCg6kGTE5Z.PmGI8ftBQ370OHKg8CuaiSmuesY5ugGUjSLM1y8fmYLRSSTajjjRXZ2oxiZ_u3v3M4mntZvFG1SiI8_t2KuQRgEjlc48V5xgapoQIpFbL7IjuHduDXYonWhAdD8QB0wQcT7W2MSQABQvVNC1euak_ryyLv1O8VMcpLu1aYiNtXKpK4o3LrQKN6DC71B7StzWqnbN3Bn8T1RECiiY2nVaVg3Q2GFkB8XpNNyRw6Gkiop83WtOm09gV4x76ddyGjSYrCTxjgyNRqubbp_UB2ylEe68jzItHFvug.g6vqzrAKqwjWFNxIKuw95.CC2l_hFAELnVy8HrA4KnovxkKcSeEIsGPxcrBuY4RBpn49BH6Nx.tim8veHhBqyeg60rQx7zsha.RVUiAOD5Gv39RI04uPKHRm8.IqfnwO5EYw4JQZ4R9toUdo4ND9GjKIGqiPvVcp6XnSgoTL_NQ6uVrVCFTYz2sbHdzNHPU3fnEFVO6KcepD5QTPuwrRASX7ntSrc5Y61PvyvqP8OAKzRNOGA_DXLiQaJqs8SA0HnH.mSH35.q4Z5sh34R0se0R1N4_yi_HfNna2JfqQ9_ZOOfVNpR3iZsCbaQ5tti90AY.lkN_RBkrOQ79r6D0TeRQfAmJL11qkpFoTsCC33WHdPp3hhtWKQjFwcrzztYwEK1MejrfeFRT148VHwp4QA0UuXd34su2f_Liz2QXEHUsPVjz7e8zwgiPFG14M_ydr6md9O7N9D07o.z01b350GyjWE9SjubZjRdluPcl1ihsskCNgboqpQaQMHlLKSD8DkHhPFVwdgIX1hjOkkvC6U0uEKC7CAWDpHB2ozRt_1osYBdnweBcWzm8Mbqe1ZFZGB164mE9mgJ.bQj81kMaqftjRhEOCx9JIJQvsrE86wyj8RWwW3M9Wq4JEVEWtz40tfyb9oVcb0T0SE3B1X9FZfaJhOA0xjaE3H.Ety6ox5r1U42Lf5uBiYw1InyikpXs08YficvJDK0gwhZG2KYvkQC._NxFLXPlle_7Q3fO63unbhV0qCrLLRkfBIFvYiytwjTiEZmHix0KmVpiFbFVmWXEM._3aSTwP6pDrYf9Cq77Y7p5hjbuWFTkXYY0A5gu8KhYCW2RPlMmLnc2p0oZl.kXuMOO6OE2hZoLkbAnA0u3ha9GuzYtXRAg5Y9EFHfIBhArqEIuqW5WZwWDN8melZxvrRip7.4PE140aFqO87YhmD6zptUJ.Mtnv5yCG1cV_RqwSfKFWzEc0hdQ51DU_A9Kda48CMTU9rVCPMlefDbpUfXkrW.Tx0bC9lgClN5Vu_yMvOB7dBHDvDDSTm38s72FmGSB9V4MIKSz7F3OJ.kzV39nn7zzU6FipqiN8ma4Dif3K7PcPrXe_k5Qdj9pFrp1l.x525zfzaAWLjyPdtkyPOhv0kTcSI3Zt6qKqx9G3PsuYCzA3su4wZsSaZjlXihPR2Oo5yvExlLRdXGMm8pvn6tNRxhPbypo51gbqmL6pniGvcRtDVRh6BaKJcwuAgLcgBhX4qjokTdG4FPIhHQ1whZcwALj4lNLu.cDUi5K8MtogCep5sPhJUDvo8hg8yNFAYgRRu5cqjqgLm4CvBJHsAddq58VISSciArFZnpRnRC.XqydtpDGjL.70qe24.gf0hYV91z98uGCp8TQcQRiuALMauKKkmB8EA095.RWvW5cXuhG4oMU95jtSe3KyE1JUbZc7wairTg.oXAKNxDy6bl0xZElB_YaOHHv9zjltihRdBNzPa4nHxVNxjyjIujigYQcVwSQGNF513owOTEGvFGZBXhFcgrjHpEGmeaTjPREeMU7BT9zPTpXWlnBT2eDi0sDSn2Oj3Rc265v1L9c7fZH91rE3T2C3tumbSU1oFPvx7GMRq3HuDVAd3Qggz9b2yAa_AAYsgTUKWpIjiPIjQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=8e7349104b3feb9e';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, "\/content\/95\/20\/e2755.abstract?__cf_chl_rt_tk=rCPdOmmSpES.YhEJncMlYdZkzh5kgDKRc8Ss.0OWALk-1732387202-1.0.1.1-h0G.uablfYPCRGEz8dw44sdFdpM9XSRkuqcKoChV.9g" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>