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: "adc.bmj.com",cType: 'managed',cRay: '92c6b303df73fcf3',cH: '.x.5s5d133UMWqg8.1WIX6iiJ8OjBFv0JIyOLXm5.Ok-1743999278-1.2.1.1-vUXIgQu.VaeJfvYeM3F30LitOsWyCYGK9gu0wcyuN0y8j_IB_dFpJm7KOtJM5rWy',cUPMDTk: "\/pages\/authors?__cf_chl_tk=EQlz87kpBpDUC6dr4Diy2kp60hKaDvHKaClbwZbsT7c-1743999278-1.0.1.1-c_Yyqfyui7WdC3ZHdiIkgOwnTioW.zxE02N_Kh7IfGI",cFPWv: 'g',cITimeS: '1743999278',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/pages\/authors?__cf_chl_f_tk=EQlz87kpBpDUC6dr4Diy2kp60hKaDvHKaClbwZbsT7c-1743999278-1.0.1.1-c_Yyqfyui7WdC3ZHdiIkgOwnTioW.zxE02N_Kh7IfGI",md: "ZSfCYs7wAXA4tUAxJNfCNkx8wj_VSU1yHiB31DXXG5s-1743999278-1.2.1.1-ckFhkughu2LDSFZVaE9xm5XGQPx0N.fQ7ISNncwluI_WNq_QT7q4cDIH4CQBElmmASuxmYhzu96de9LoWwnLvXas6GBx7iszzN9X_2_EIovFY9fbMprWs0zwGNcc.Z4AcSe2Qb0gwGqufnWXB_0j9akoVRUwQoHl5hckC_2n7EsLSTkbigNGCdXdjZoDf_TycPf1z5s1.xST__Kqakg9GkeqbnZ9dqENiJapVFnpnZmf7mJVLaWOIyPAMszDq4emwN3noJSyydFsy7YvvftMiNJH4DTf7BnWRKteNctFiDrw48a78FI0p6wraUa4g1Kq5Y6I7fetrJzxgbXFP9mbWSOdk0.ONLmQ7VAQ3bIbFrY39r4iPDV5eAvCDHjh1EuME6RII7vbaXa2QTgFXVCuJx36z47fh4peosQToSEz8h.wBDYcIjGMotWXnneEYtfRYpcKFGSezc4pWJ3kg.AR9kLgCLN4Ma5STUD6azC3dArGPntEh9Vf2mEm5Ny8K0hBui7myebmbgJfweZePf0dHxMGWzCtKEd9YVHqPW4TTPgbKOwE3tYuO0VNLECTJ.1K2m85hUyhbih3wjV4JqCahPg2iHWW2uk9EdxwJXLdrdhyQn9Nqxdbqu3b3coih1uXadRxmTE_pHqA2c7GYWrooPmq.PVmr_WGWgZSXLfJ0oS0Hj17frsb4Ow6XOD9Keecru5KV9VFVhTUllvhgOJYJ6wNYOrC7k6HRpxRIEfY0O35IaqAQmMMEgLSsKV2fJK_2zCIPVAFCc.n.oEDTIc2b03NXRu3YYCPn8nC_8xwRbxu5i75W0MPCSnM25.1KJYJFNn37EYkSCqYZZtIGYQO17zKBPmTJLJNSPsuiWt6B.hL5wWo4ineIuf62f4O1cdV02e.oEy5YFMB.U7Nb.0oesGMYQHdKnzkFwjrrmlatUpm79Pj3o1Knx_KmRQNPZqFBrg_E5jNBihCvtG_Mxa0Z0H7ca.wT4_S4Wy.dvLhsAHpC0JviZh8kLKKtpf8LH1NAauF6VEG4WGfN1aJgzOfDLbgla_WCqjiOTcuF4BaZINO49O587wKbzVt9thd1AhN",mdrd: "zP_tyc6zY38F8Bp86r1GQhO8Sqq2ylj.V9LRunQmDBE-1743999278-1.2.1.1-sjv98CHslivk.QE7OjxQfb6i3_FYmQFlrtjeRD4.7rND95q4xdRaFccpWVwkSapLPi6lB_yQBqoY9X5sEwuuYCKI7IffcknBVRUCdD4SU3Im04wfyouuRe5CLEJPv9PpVRz8rYbmXjNNlxp5k16Izq6_18eHWe8JouGYPUtH9bpuPRT0a6_3DW0BEODDdcA0ObfPmlzUUbesZqEhFUGeGOuM1BFtZlnuC_uf0V6i7DTLH3ldZX5ZrdVukC6tl0bcqVuBpR1zAu5U._e0gOkB04sY8llRRbLhgr1YGTyfFpPhy1DJWq3HozNDBBF4Krst4xjf_uFbIa4kK5LqS52kLWou8CWLncl8ip0m1JtUzNV9INYMuam1mkNF8pqJq.EHEWUJl4GudE1UkKCvH8izkABIc23Ny0A5swcpCWNrxumZ_7pMdpUcs3FZGqjyltz3Ey595fv7kv.tZEeckKxZY4ykaNKYIKVCWkVhgzESmgNnmAsimK4CbVBxfkn8u0OgQ5unIF7v8Gg51KmwUV_2G85428Jfp9lBv6KirvlPaReQYKfVRzNQXEfUE9VMWg8mS.8s.qTSeZ83.sxycuq5Rua5Ae0CJqaFy6wHqdQ5Iu4azgSyV.5xyZ_dguONRkogZ_i5ZDFUCvmZsla8RQ2bttAt0PKu707.lJw7zl.8nom8ZmJnryYKjct59LeWVcLnosloN4iKav2x0zrh0HqnVmNvVbZaoqhtwYUqhuhFsA6UL23qVw5ZwIwAg12NRz9MtGMIzco2mb16GZ4At5CtjAwIjcZ3EJtGoGQfLEfG9rPDCXSfR0wtu_DL66QSXsEtFlt0WiPK3LUfmI4G9YJkrV8shKA6D6Izr61cFY2gaZ8pjDD.uzpKX6xI1bJZItEzzoF.fh4uid8TU5u6KxeIOosZ8xAvdr6SXGtmQglqPkSR9n94NfvZYe4ZIj1ZpY2m._KUJ4wUqKuyonuKtAXIvbynmMSSIIYwiLxUolZGs3eyM9DxhgNTpPTMmlCfM0S3egtZMbMRtpmvPE0RjQr5Fd49m.N2P61wSGsVZC6wq6NNs36PiV0u75yZDacSOf1e92uaGL2cQEyjPlJWeFd2.Nbev1HRBgheEJQhZjMDxGQOQ1ROzC4GGUNpJXLURbefZ.kj28YEnefI33OWruGbitFWWiEf40yG7V1ZNT5snIkj5W2nxHeD.Ryc3PHGhIV2QtXCQrGd24OrfBwzLF88scRyiLRn_R2RQ4L8pdxDuVd4EaNvViyhmssDkAHc1CUCxaYGn4yZAxMFTcW5jwxYslwO4bUuxiPesprriVPnb_0PbvJV2PAn8dtMnv_.ScssQdhEnVOeT.SE7hjdw5h1U_nDsf2ydTO0FJjHSF6kPx.318oE6SftPcDnBh7amr6z3aqMNNpqT8YujZvkbCS6sMrfb1cKXALBZR_uWOScPwoDaUIueHjS1wObgrjKHaJCUYf3ZkPhpLFRsro1bb9ziE3QsY.QmuhxnJRGBh5Ev0OMYnXvhctcwiBQtbkVF0pUEscopbnm1Xl1MqoF8mu6NXJkEU08mfw4deb2Y4xsb0.wccOBD6y8okRImZQazqIvIrQKkczrKiAIHn78y3X5cQlKBgE61mExt8bf.d63XQBJNmGbzTP7xCBKE7pJskJAYuvK6cxJ7Hf54ULD2.sLxHueaIK67RE7eY2nlQilk3n6_YknhZEyyYnreSNa34FwCR9WEt90TBAmWZGvO_Za43doSgoJX.GprFvSbmokxvz_u1SE3XGK5qtdRFXrb6HrxknbLlpNskV9H4VGwx0Y9m65U4V7jSb7garyh.uwhZWbCQMxS2ZxAZEg8uXxu7LHfl.cq2gRYwIxQJY1nE1TLYBzdp8dn3RandG_ndovjZfxI7oOxQYLxKi6MnJxxyIGTZMbnIj.h6Zht3wvxev4iL9_McfLgiNvzGbXaHjRf5voIYqcBCNU47b4YLeh70zIeKVRZIkZtsminSvmwnzQzTDVdYiQJmmUXbmfaVPxHKT59_o0jOg7OXccE2kiZMRSGOyNZeIQll3zRy7wQAoFzg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=92c6b303df73fcf3';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, "\/pages\/authors?__cf_chl_rt_tk=EQlz87kpBpDUC6dr4Diy2kp60hKaDvHKaClbwZbsT7c-1743999278-1.0.1.1-c_Yyqfyui7WdC3ZHdiIkgOwnTioW.zxE02N_Kh7IfGI" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>