function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ghahari, Hassan & Moulet, Pierre & Rider, David A.', 2],
    ['Grazia, Jocélia & Campos, Luiz A.', 3],
    ['Jung, Sunghoon & Kim, Junggon & Oh, Sumin & Heiss, Ernst', 1],
    ['Linnavuori, Rauno E.', 1],
    ['Roell, Talita & Lemaître, Valérie A. & Webb, Michael D.', 16],
    ['Vinokurov, N. N. & Rudoi, V. V.', 1],
    ['Zhao, Qing & Wei, Jiufeng & Bu, Wenjun & Liu, Guoqing', 1],
    ['Zou, Deyu & Wang, Mengqing & Zhang, Lisheng & Zhang, Ying', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);