"Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@nl . "art\u00EDculu cient\u00EDficu espubliz\u00E1u en xunetu de 1998"@ast . . "Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@en . "1071-1075" . "1998-07-01T00:00:00Z"^^ . "wetenschappelijk artikel"@nl . "7" . . . . "im Juli 1998 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . "9662675" . . . . "Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@en . "J Roeykens" . . . "Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@en . "30" . . . . . "Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@nl . . . "10.1097/00005768-199807000-00008" . "R Meeusen" . "J Borms" . . "scientific article published on 01 July 1998"@en . . "article scientifique publi\u00E9 en 1998"@fr . . "Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@nl . . "R Rogers" . . "L Magnus" . "Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire"@en . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u043B\u0438\u043F\u043D\u0456 1998"@uk . . . .