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Burns, Chris ,  Tiplady, Richard ,  Rigsby, Peter ,  World Health Organization. Biologicals Unit ,  WHO Expert Committee on Biological Standardization (2010 : Geneva, Switzerland) ,  [WHO international collaborative study of the proposed 2nd international standard for thyroid stimulating antibody / by Chris Burns, Richard Tiplady and Peter Rigsby]

Rigsby, Peter ,  Rijpkema, Sjoerd ,  Guy, Edward C ,  Gaines Das, Rose ,  World Health Organization. Biologicals Unit ,  WHO Expert Committee on Biological Standardization (2003 : Geneva, Switzerland) ,  [International collaborative study : evaluation of a candidate replacement international standard preparation for anti-toxoplasma serum, human / Peter Rigsby, Sjoerd Rijpkema, Edward C. Guy, and Rose Gaines Das]

Rigsby, Peter ,  Rijpkema, Sjoerd ,  Guy, Edward C ,  Gaines Das, Rose ,  World Health Organization. Biologicals Unit ,  WHO Expert Committee on Biological Standardization (2003 : Geneva, Switzerland) ,  [International collaborative study : evaluation of a candidate replacement international standard preparation for anti-toxoplasma serum, human / Peter Rigsby, Sjoerd Rijpkema, Edward C. Guy, and Rose Gaines Das]

Burns, Chris ,  Tiplady, Richard ,  Rigsby, Peter ,  World Health Organization. Biologicals Unit ,  WHO Expert Committee on Biological Standardization (2010 : Geneva, Switzerland) ,  [WHO international collaborative study of the proposed 2nd international standard for thyroid stimulating antibody / by Chris Burns, Richard Tiplady and Peter Rigsby]