function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cao, Yanghui & Dmitriev, Dmitry A. & Dietrich, Christopher H.', 1],
    ['Oh, Sumin & Pham, Hong-Thai & Jung, Sunghoon', 6],
    ['Song, Yuehua & Li, Zizhong', 12],
    ['Song, Yuehua & Li, Zizhong & Xiong, Jing', 4],
    ['Tan, Chao & Yuan, Xiao-Wei & Song, Yue-Hua', 2],
    ['Tan, Wei-Wen & Pu, Tian-Yi & Song, Yue-Hua', 4],
    ['Tóth, Mária & Orosz, András & Rédei, Dávid', 2],
    ['Yang, Meixia & Cao, Yanghui & Zhang, Yalin', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    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);