function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Janák, Jiří', 38],
    ['Lv, Wei-Xiang & Zhao, Cai-Yun & Zhou, Hong-Zhang', 27],
    ['Macháčková, Lenka & Mikátová, Šárka & Hájek, Jiří', 113],
    ['Naomi, Shun-Ichiro', 33],
    ['Puthz, V', 22],
    ['Puthz, V.', 601],
    ['Puthz, Volker', 476],
    ['Ryvkin, Alexandr B.', 74],
    ['Serri, Sayeh & Frisch, Johannes', 89],
    ['Tang, Liang & Li, Li-Zhen', 18],
    ['Tang, Liang & Liu, Si-Yu & Niu, Tong', 14],
    ['Tang, Liang & Puthz, Volker & Yue, Yan-Li', 24],
    ['Tang, Liang & Xu, Wang & Xia, Mei-Hua', 13],
    ['Webster, Reginald P. & Davies, Anthony E. & Klimaszewski, Jan', 13],
    ['Zhao, Tie-Xiong', 24],
    ['Other (43)', 202]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1781)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);