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: "academic.oup.com",cType: 'managed',cRay: '91355398ceedfcf8',cH: 'vD7uL46FPM5kHZluYOrssjWxpBfJM1aiy6Vh52_KDcU-1739790580-1.2.1.1-peKbXAlNmmjw2KdGJPwVQDWtZuPwprcDukB4HUiWm09YDeBwduOro37SOoETuRRM',cUPMDTk: "\/search-results?q=&tax=AcademicSubjects\/AHU03010&__cf_chl_tk=G.f25HUQelqkX2dvM91LxIkKD2Z4HFjuTAqFA.01uIw-1739790580-1.0.1.1-EC5f96ot5TGeKOK4cS7fegrqFbWqJVevv.1L8sW3fpo",cFPWv: 'b',cITimeS: '1739790580',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search-results?q=&tax=AcademicSubjects\/AHU03010&__cf_chl_f_tk=G.f25HUQelqkX2dvM91LxIkKD2Z4HFjuTAqFA.01uIw-1739790580-1.0.1.1-EC5f96ot5TGeKOK4cS7fegrqFbWqJVevv.1L8sW3fpo",md: "N3zMV0aulsPBdYJ.Kfn9NIBB9jc7ELRrEmNhvYXXyUU-1739790580-1.2.1.1-wbB.bV7B_oasc8b2ngxn7b6MMv9RgHBCF2qghe4LnmfIx4GCDkDt8YP36RagABXluNCZq0frEUOxvbT8vTLtwO3ZASjyGb1hsDcvPN4jbHhtOMEwuaYysTV8uaNdQtS4iA9NM2xWmUfm7hz74dEMNBI9mANBFnoNpuqR663kYJ4E2PAkdTO5Sha3dGSklf6yEMYPMy6vfoeOSx7yRT_j_D3rNRYe8.z3VEf8EDJdWF6jqEnBLeuCIwNOUDQ5PVUfVh7lpWO1Lb5.xpdXEU.SMdV1b.e4Svh4GFhEfep9LNhoufLhlqn2fMDZIFfP_hQ_7aSoUzcXQjQDz8EC_3Vq4hHfHhY6N85rXNltrvXVO423CiMlRa1PvHozBIBJhCPnqBG1f2AgYoOPrX8Ks4lmJ.hpt5siMwsNGDW8VUduA3_n34y2LhcALHojlNOf8oBOBsaotNjNE.mB3_IrWqyJuJ532IibF2VIxziQYPSZHBT78q2QCTLpOTpRn9BFke_zsEULUsDatxZR2brvQZWwObC4zR4SffpUF88mr6guNGK55M1Uy.Zg3O4MZCi_MnfTV.Fr33kUbQUg4hEWHE8.fvJAWPVHBN_nXvYdLxHooUV9chZo1RN5whL1JfsGzTettTnKv54mAF7oltsA5zQ2JChQ_Dx4XNJpCvY8RCbgb.edmVFJvHYrugtCTDQqadk8uYbamVaA_E4wlsMji15M9APhFSN.eFsywF7FWul7clGuqQYAktFlBN5.UKmE_YN.R1cek.hlTGijETGEMHOUYW41fFj6dhRfrHOHE9V6pKwgf8Wd6vGsr.Xf6rgOGdvH1EJZ3o3zPPvavk74BR5iqUwd3IEiGxKmQUlyDnjjDt19cn0rSoJFdSpw3xlf.CFE2apFcOy6AejHIw9VAELoecykw0bKuIznr3Jc8xZFlcR3lqHnKlqUseer0gUM3g.GUrjMFX_lHmFcHlMsgx7xuYy6eAOhD9EaX4Yyfi7eDVg8SR7ggaMDNq4WgZK7wxfGW.P9j8z4eq2x3WTK77kiTgoiq0.qrTJt._CoIbnS5kXG.ZoQ3fHbjbDnOGEEzrAzA__vAhADTGfpIav5V2ZevT3mM1O4nsfDE_BU7bLBUgFQiGtxK5T0W.Z_p5i5oCtG__1O2Et6X64cUx3KjJNpbdMLFbJG9HIBZbXP0u2JzzDGgYYNaHqV9gjanxBt2hV6hicida3OTthYzlS5OQZozrbgchnez7icFJv01D5tTxAfTSSiEEXdhrpRHY4_FvGpa7suqpS34le0tg1V2YHR.MHvc3buUdub0hOOX6bZCv5LxpzhfU_mzhU9fh_FhurXUxwgT7K1_zieI_Vqgwkfqn2ZILbENyCXmFCF3LmF0CMIrDy8R0O5oybPzF5UnT80hH73FtouUuNGBIggZhHsYinzI84Csj2UKJkw6H9u4t7PY4qlunuCfNunHED7s9.l.iWVJdrzWHV1BmYXJJ2daUwF6fjZX..x110FjegmXq9TYBeoYbp709XHbDEfeoABA23jYK7LCLdh0wG_FQoCq1CVjPUMU488AdFQw2GvJv9ODKwUHzMAffhlYIRsUISsSJD3lqO1JlIbJXIWK27udYRMVwGXveyIz.W1M7VpTDGQFLjZHG.OoQ4wpMuXPsm1t_D1HAzitrOr2dleagEvqm6Zq.VBXYAbl2ZmrU2_ckOvNtwRz32Dym6GKcAj5zi2adORVsgDhD9kJj3uxiRT111O2O38XzZoC3.vr8suwL7AIVBtiv0fukRooxtm0SM8x1ueK48zvjlVZZ9ARD0yjR5gpqGlzCPaBMUxvnvILjy3xRfn8wUcSNY77v2rwcvJMyUN2OCFWnh5Mf762MmOvqkSQ8HrK0RUN9i3JkdzHK0bUBT69biCmSKJwUrbVO1ftuCrhaUBpbUTOatYtbLt4endHJ9s9mScIQvG2RPlPgII5DmRm.z3go5l17v9LrkARcKbeqkKY_dHN77XpnBRRmvyc40nBkdXYAYUhYh1ICwJTsblrR_xlOVJbAen_JY9f3pC7zK4uAY_68Qh0VRNrnYpWKvFZRjHLrpASQbWTX_iVSImIbfSY6uhK3_9m5H3jylyxwV00G26f.E2C6TPZxejo3A_GAuTMHy5cymwCXEl_qnW7mmfU0KYvkFdKMrniwrIPe.3xe4IKDV0erE58MqKjnRi_UlUg_rEgLKhm3zjN2.d43_z3geDIpLJsyRGmz6TCkd7nyM7iGmgoZPTqleZ08FZonssSk_ZD1_vyPTTzoBKZjbYxc6TQYYOggEynlFUrb.Cal.EMvPEdhBt13E.Uw_XKFjmR2j5XIufAXy.FN6qnYPdT7pDNvuaChxH.kVztEOnKdEch7PvDiDgGlgD3PL17tLqcy6ah.kFodgS9YjimA0BlmckYYqNjZzR56CotFW.A25Yxn23sAbvqynPLztE..BB2I9RdNEFJdHbmNKSNfgwRvn91dQvtIYPfr9trzqUXH0xkmJ4tNE7K2quVOm0bXXehq0X4kGswrVfSoVTlIX1Df4c97sSNHJAeCOCpxQMzyhSgS6vR4IxSXiy.g5FhpCOO6JR5zRVXWv5id6XpVbnI5PPK.uF6yGUts6k7dO7E4nYMEEX.EH6PQ",mdrd: "wdBoOHt5Xw_Nr2l.ABi3XNfrOPdVg33owPeNMy6pavM-1739790580-1.2.1.1-2R7Ypfy3LbdfwKnenutIw.kayMuZznWeVmjjf.7Jjo.WDkm6mviHgfoerBhOe1CqW3wLkd95wnwbXSE2b_hbkmFLailSyuXbyxXKDe9M1pRZsk1CBF_yp.eCpenuWmObsG623KA5vgUbW8xjTxX5mBaH4DkC.za3WXWW4A3PSmdbRAfrxYmtb4FHTKxZUiPQfl8LnDF1bRdY11F1.OlbwbSDZHPHt2mzXXDdMYHGJPPKUoo8amFPJtoBwDtitCTlBwos4Yc0C7MO9KKdYwPxePnBMkkxtE22w6i1Qpvv3kYSSqK_rIpsXG1Irh5Soe8OwYcTMtyUj1EoeTrTrxSj4hn4bTlmO2MsEAuqq1h3UWkid3zrj2C5CzXhAnXh7_5RLxid4IUZnh32QsiltyeHuDRg2zIwF.GL5_Pdwrt2xB4iEdiY1kVw4EuLUUzBNDSl97tNO13tVeKwCyKVVmKytzPUga9zMDyaLErWQkBDVUWai_sQilPyLScKuCEjO57wkNiRJiNHrDoHGMrE5zN2bQ1cy.eGIdwB4MNogUUUMrsqq82Hm73OAZIFg_6ob9pWqne4ZV46LAA1iLVWS15LUv92MAgjDCDsiARheKqcqi.zHu3qJDWykB6CdZkCF5h2SFk9NkU6omULuIaSwW_sw0_XXYu_CgXDMqtctDS5URQ67ISb3s9f.0V1w8LvLPjaDLiPpeRXqRzChT4UiFbbfmHF6NIsgG9rOd8YjSsYGbhzAoRJScO4_seDE9vsfe3VDuljEHluoyRNR6NEpo6fJtOmPO7J1f_ZHuXZNikHESE9hmPFWpqWs1C3FcD2Wy0XU1OQrzzB9OVFH_8gKq97ftyX7pP0ffHsGr.DavnegL6qqv20oiCN9rl_alLZBr3okMIXnY99flswVVjyOtCynbdI.hCjMHCLrl1egNPiBAnDdDkLJTiVajchRz2eovSKnGqqhIAyJS6zrMCejBGgdsAmA_dFcKlXiabAKG1mFfqJuMsNklGQDQyx3veCqn3CAZGcjK1i6awC36WwB_Q7J1r42yWZnTQv61UxL50jh4M82.H55AL8nis2uP2Bx4nH_hXYl0tsfGUzTME0pl8z_i2rYbXXWzbM8lrMpIAq8uN_8avW9u9933rZA95Lg9Nas0ayB3OinJv1LAEF8PKWfPF8Df.mVn7goeA1SbvlMf1xKX_VdBE2k56Qe.nAleVdW3WD1mMOq1LqBuea.lNk_KdvCcr9jv4aWGVPQBebeYzJk.BeqIqNOFGLhJBxnkCA0.Nmg_OmA.r5wvH0Vs0OAkqpvCr3G0tQVIcoh74Bf1_mLzy7SIriUVg.nSx9MJ3LQntc4uqrLPEzjdXVoKObNJM7lA97Dwn4v3fcwwGA4PaKvQOERvUK_alEBV4yrYFrENSQF6n0C4LJ2JW8C.zr_vCRnDuBYDcXbZh2TiQ2h2p3tDqKIjB7rHDf7cI934bc1Imc6woazTHhvmUFHqLWrCL20JW8q5WLF13YFy0iTCVoB8hgXapILjNPjb6RlY.sak80dbZ3Hoh3K6woW1to5Y7GR1SWbPzbrzvzVGvOG3xPQ2qQkowopG.dX2xUtr_1js6abQIO2E7cG8q9xRL0z5fifaX7wasJUP9wn6f5Fb.7wRzyNlWIWMeNN0gKrcAyg1i3LbJfuu6fFCFStJrCwkhrO.enHR8xJUQ0sQcRoyD7R52LMECd0LjrJ6_fdVNkdNc2FHaIvInaQF3_RaQIZ0Zhgqi_jMHoz9PeVojf3icYSmcnyawCvqQdzrkIDEH.eBq_L2s0DUqsw01nBTGevXWSU49BU9Y140jstu7JrBvSeLuFU9uTnp6OhKsrnKVuP2RhrAV0qGsw7wMCTvGILUZ6IWi9Rcv_jmUzPdvOm3i_maNmXAtxigGuFDpVesGDTYwlQ.jawTv6EL6Z5GAqtrY5rI7GYsdls.5XTJuNB.4"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91355398ceedfcf8';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, "\/search-results?q=&tax=AcademicSubjects\/AHU03010&__cf_chl_rt_tk=G.f25HUQelqkX2dvM91LxIkKD2Z4HFjuTAqFA.01uIw-1739790580-1.0.1.1-EC5f96ot5TGeKOK4cS7fegrqFbWqJVevv.1L8sW3fpo" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>