function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bardin, Jérémie & Rouget, Isabelle & Cecca, Fabrizio', 3],
    ['Hayami, Itaru & Akahane, Hisatada', 1],
    ['Jiang, Ning & Liang, Ling-Yu & Tian, Cheng-Ming', 1],
    ['Kieffer, Jean-Jacques', 1],
    ['Tibell, Sanja & Tibell, Leif & Pang, Ka-Lai', 4],
    ['Walker, Donald M. & Castlebury, Lisa A. & Rossman, Amy Y.', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);