function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Macháčková, Lenka & Mikátová, Šárka & Hájek, Jiří', 17],
    ['Puthz, Volker', 117],
    ['Serri, Sayeh & Frisch, Johannes', 1],
    ['Shuai, Qi & Tang, Liang', 13],
    ['Tang, Liang & Hu, Cheng-Zhi', 6],
    ['Tang, Liang & Huang, Meng-Chi', 7],
    ['Tang, Liang & Li, Li-Zhen', 7],
    ['Tang, Liang & Li, Li-Zhen & Cao, Guang-Hong', 9],
    ['Tang, Liang & Wang, Wei & Szx, Olympus & Eos, Canon', 7],
    ['Wang, Wei & Tang, Liang & Luo, Yong-Ting', 4],
    ['Webster, Reginald P. & Davies, Anthony E. & Klimaszewski, Jan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=189)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);