共 7 条
[1]
Chronic relapsing inflammatory optic neuropathy (CRION)
[J].
Kidd, D
;
Burton, B
;
Plant, GT
;
Graham, EM
.
BRAIN,
2003, 126
:276-284

Kidd, D
论文数: 0 引用数: 0
h-index: 0
机构: St Thomas Hosp, Med Eye Unit, London SE1 7EH, England

Burton, B
论文数: 0 引用数: 0
h-index: 0
机构: St Thomas Hosp, Med Eye Unit, London SE1 7EH, England

Plant, GT
论文数: 0 引用数: 0
h-index: 0
机构: St Thomas Hosp, Med Eye Unit, London SE1 7EH, England

Graham, EM
论文数: 0 引用数: 0
h-index: 0
机构: St Thomas Hosp, Med Eye Unit, London SE1 7EH, England
[2]
Myelin-oligodendrocyte glycoprotein antibodies in adults with a neuromyelitis optica phenotype
[J].
Kitley, Joanna
;
Woodhall, Mark
;
Waters, Patrick
;
Leite, M. Isabel
;
Devenney, Emma
;
Craig, John
;
Palace, Jacqueline
;
Vincent, Angela
.
NEUROLOGY,
2012, 79 (12)
:1273-1277

Kitley, Joanna
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Woodhall, Mark
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Waters, Patrick
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Leite, M. Isabel
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Devenney, Emma
论文数: 0 引用数: 0
h-index: 0
机构:
Royal Victoria Hosp, Dept Neurol, Belfast BT12 6BA, Antrim, North Ireland Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Craig, John
论文数: 0 引用数: 0
h-index: 0
机构:
Royal Victoria Hosp, Dept Neurol, Belfast BT12 6BA, Antrim, North Ireland Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Palace, Jacqueline
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England

Vincent, Angela
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Neurosci, Oxford OX3 9DU, England
[3]
Antibodies to Aquaporin 4, Myelin-Oligodendrocyte Glycoprotein, and the Glycine Receptor α1 Subunit in Patients With Isolated Optic Neuritis
[J].
Martinez-Hernandez, Eugenia
;
Sepulveda, Maria
;
Rostasy, Kevin
;
Hoeftberger, Romana
;
Graus, Francesc
;
Harvey, Robert J.
;
Saiz, Albert
;
Dalmau, Josep
.
JAMA NEUROLOGY,
2015, 72 (02)
:187-193

论文数: 引用数:
h-index:
机构:

Sepulveda, Maria
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Barcelona, Dept Neurol, Hosp Clin, Barcelona, Spain Univ Barcelona, Dept Neurol, Hosp Clin, Barcelona, Spain

论文数: 引用数:
h-index:
机构:

Hoeftberger, Romana
论文数: 0 引用数: 0
h-index: 0
机构:
Inst Invest Biomed August Pi & Sunyer IDIBAPS, Neuroimmunol Program, Barcelona 08036, Spain
Med Univ Vienna, Inst Neurol, Vienna, Austria Univ Barcelona, Dept Neurol, Hosp Clin, Barcelona, Spain

论文数: 引用数:
h-index:
机构:

Harvey, Robert J.
论文数: 0 引用数: 0
h-index: 0
机构:
UCL Sch Pharm, Dept Pharmacol, London, England Univ Barcelona, Dept Neurol, Hosp Clin, Barcelona, Spain

论文数: 引用数:
h-index:
机构:

Dalmau, Josep
论文数: 0 引用数: 0
h-index: 0
机构:
Inst Invest Biomed August Pi & Sunyer IDIBAPS, Neuroimmunol Program, Barcelona 08036, Spain
Catalan Inst Res & Adv Studies ICREA, Barcelona, Spain Univ Barcelona, Dept Neurol, Hosp Clin, Barcelona, Spain
[4]
Distinction and Temporal Stability of Conformational Epitopes on Myelin Oligodendrocyte Glycoprotein Recognized by Patients with Different Inflammatory Central Nervous System Diseases
[J].
Mayer, Marie C.
;
Breithaupt, Constanze
;
Reindl, Markus
;
Schanda, Kathrin
;
Rostasy, Kevin
;
Berger, Thomas
;
Dale, Russell C.
;
Brilot, Fabienne
;
Olsson, Tomas
;
Jenne, Dieter
;
Proebstel, Anne-Katrin
;
Dornmair, Klaus
;
Wekerle, Hartmut
;
Hohlfeld, Reinhard
;
Banwell, Brenda
;
Bar-Or, Amit
;
Meinl, Edgar
.
JOURNAL OF IMMUNOLOGY,
2013, 191 (07)
:3594-3604

Mayer, Marie C.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Breithaupt, Constanze
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Halle Wittenberg, Inst Biochem & Biotechnol, D-06120 Halle, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Reindl, Markus
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Schanda, Kathrin
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Rostasy, Kevin
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Pediat 1, Div Neuropediat, A-6020 Innsbruck, Austria Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Berger, Thomas
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Dale, Russell C.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Neuroimmunol Grp, Inst Neurosci & Muscle Res, Kids Res Inst,Childrens Hosp Westmead, Westmead, NSW 2145, Australia Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Brilot, Fabienne
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Neuroimmunol Grp, Inst Neurosci & Muscle Res, Kids Res Inst,Childrens Hosp Westmead, Westmead, NSW 2145, Australia Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Olsson, Tomas
论文数: 0 引用数: 0
h-index: 0
机构:
Karolinska Univ Hosp, Dept Clin Neurosci, Neuroimmunol Unit, S-17176 Stockholm, Sweden Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Jenne, Dieter
论文数: 0 引用数: 0
h-index: 0
机构:
German Ctr Lung Res, Comprehens Pneumol Ctr, Inst Lung Biol & Dis, D-81377 Munich, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Proebstel, Anne-Katrin
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Dornmair, Klaus
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Wekerle, Hartmut
论文数: 0 引用数: 0
h-index: 0
机构: Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Hohlfeld, Reinhard
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany
Munich Cluster Syst Neurol SyNergy, D-80336 Martinsried, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Banwell, Brenda
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Childrens Hosp Philadelphia, Div Neurol, Dept Pediat, Philadelphia, PA 19104 USA Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Bar-Or, Amit
论文数: 0 引用数: 0
h-index: 0
机构:
McGill Univ, Montreal Neurol Inst, Neuroimmunol Unit, Montreal, PQ H3A 2BA, Canada
McGill Univ, Montreal Neurol Inst, Expt Therapeut Program, Montreal, PQ H3A 2BA, Canada Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany

Meinl, Edgar
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany Univ Munich, Inst Clin Neuroimmunol, D-81377 Munich, Germany
[5]
Antibodies to myelin oligodendrocyte glycoprotein in bilateral and recurrent optic neuritis
[J].
Ramanathan, Sudarshini
;
Reddel, Stephen W.
;
Henderson, Andrew
;
Parratt, John D. E.
;
Barnett, Michael
;
Gatt, Prudence N.
;
Merheb, Vera
;
Kumaran, Raani-Yogeeta Anusuiya
;
Pathmanandavel, Karrnan
;
Sinmaz, Nese
;
Ghadiri, Mahtab
;
Yiannikas, Con
;
Vucic, Steve
;
Stewart, Graeme
;
Bleasel, Andrew F.
;
Booth, David
;
Fung, Victor S. C.
;
Dale, Russell C.
;
Brilot, Fabienne
.
NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION,
2014, 1 (04)

论文数: 引用数:
h-index:
机构:

Reddel, Stephen W.
论文数: 0 引用数: 0
h-index: 0
机构:
Concord Repatriat Gen Hosp, Dept Neurol, Sydney, NSW, Australia
Univ Sydney, Brain & Mind Res Inst, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Henderson, Andrew
论文数: 0 引用数: 0
h-index: 0
机构:
Westmead Hosp, Dept Neurol, Sydney, NSW, Australia
Westmead Hosp, Dept Ophthalmol, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Parratt, John D. E.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Royal North Shore Hosp, Cent Clin Sch, Dept Neurol, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

论文数: 引用数:
h-index:
机构:

Gatt, Prudence N.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Westmead Millennium Inst Med Res, Inst Immunol & Allergy Res, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Merheb, Vera
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Kumaran, Raani-Yogeeta Anusuiya
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

论文数: 引用数:
h-index:
机构:

Sinmaz, Nese
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Ghadiri, Mahtab
论文数: 0 引用数: 0
h-index: 0
机构:
Royal Prince Alfred Hosp, Dept Neurol, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Yiannikas, Con
论文数: 0 引用数: 0
h-index: 0
机构:
Concord Repatriat Gen Hosp, Dept Neurol, Sydney, NSW, Australia
Univ Sydney, Royal North Shore Hosp, Cent Clin Sch, Dept Neurol, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Vucic, Steve
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Neurosci Res Australia, Western Clin Sch, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Stewart, Graeme
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Westmead Millennium Inst Med Res, Inst Immunol & Allergy Res, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Bleasel, Andrew F.
论文数: 0 引用数: 0
h-index: 0
机构:
Westmead Hosp, Dept Neurol, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Booth, David
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Westmead Millennium Inst Med Res, Inst Immunol & Allergy Res, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Fung, Victor S. C.
论文数: 0 引用数: 0
h-index: 0
机构:
Westmead Hosp, Dept Neurol, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Dale, Russell C.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia

Brilot, Fabienne
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia Univ Sydney, Childrens Hosp Westmead, Sydney Med Sch, Kids Res Inst,Inst Neurosci & Muscle Res,Neuroimm, Sydney, NSW, Australia
[6]
The spectrum of MOG autoantibody-associated demyelinating diseases
[J].
Reindl, Markus
;
Di Pauli, Franziska
;
Rostsy, Kevin
;
Berger, Thomas
.
NATURE REVIEWS NEUROLOGY,
2013, 9 (08)
:455-461

Reindl, Markus
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria

Di Pauli, Franziska
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria

Rostsy, Kevin
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Pediat, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria

Berger, Thomas
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria
[7]
Persisting myelin oligodendrocyte glycoprotein antibodies in aquaporin-4 antibody negative pediatric neuromyelitis optica
[J].
Rostasy, K.
;
Mader, S.
;
Hennes, E. M.
;
Schanda, K.
;
Gredler, V.
;
Guenther, A.
;
Blaschek, A.
;
Korenke, C.
;
Pritsch, M.
;
Pohl, D.
;
Maier, O.
;
Kuchukhidze, G.
;
Brunner-Krainz, M.
;
Berger, T.
;
Reindl, M.
.
MULTIPLE SCLEROSIS JOURNAL,
2013, 19 (08)
:1052-1059

Rostasy, K.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Mader, S.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Hennes, E. M.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Schanda, K.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Gredler, V.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Guenther, A.
论文数: 0 引用数: 0
h-index: 0
机构:
Skaraborgs Hosp, Dept Paediat, Skaraborg, Sweden Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Blaschek, A.
论文数: 0 引用数: 0
h-index: 0
机构: Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Korenke, C.
论文数: 0 引用数: 0
h-index: 0
机构:
Klinikum Oldenburg, Dept Neuropediat, Oldenburg, Germany Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Pritsch, M.
论文数: 0 引用数: 0
h-index: 0
机构:
Klinikum Siegen, Dept Neuropediat, Siegen, Germany Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Pohl, D.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Eastern Ontario, Dept Neurol, Toronto, ON, Canada Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Maier, O.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp St Gallen, Dept Neuropediat, St Gallen, Switzerland Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Kuchukhidze, G.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Neuroradiol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Brunner-Krainz, M.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Graz, Dept Pediat, Graz, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Berger, T.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria

Reindl, M.
论文数: 0 引用数: 0
h-index: 0
机构:
Med Univ Innsbruck, Dept Clin Neurol, A-6020 Innsbruck, Austria Med Univ Innsbruck, Dept Pediat 1, A-6020 Innsbruck, Austria