function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beermann, Jan & Westbury, Michael V. & Hofreiter, Michael', 1],
    ['Coleman, Charles Oliver & Krapp-Schickel, Traudl', 1],
    ['Coleman, Charles Oliver & Lowry, James K.', 1],
    ['Loerz, Anne & Maas, Elizabeth & Linse, Katrin', 3],
    ['Lörz, Anne-Nina', 6],
    ['Lörz, Anne-Nina & Coleman, Charles Oliver', 3],
    ['Lörz, Anne-Nina & Maas, Elizabeth W. & Linse, Katrin', 1],
    ['Maas, Anne-Nina Lörz Elizabeth W. & Linse, Katrin', 2],
    ['Shimomura, Michitaka & Tomikawa, Ko', 2],
    ['Verheye, Marie L. & Lörz, Anne-Nina & D‘Acoz, Cédric D’Udekem', 1],
    ['Wang, Yanrong & Zhu, Chaodong & Sha, Zhongli & Ren, Xianqiu', 2],
    ['Winfield, I. & Hendrickx, M. E.', 1],
    ['d\'Udekem d\'Acoz, Cédric & Verheye, Marie', 19],
    ['d’Acoz, Cédric d’Udekem & Verheye, Marie L.', 70]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=113)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);