function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Hsiao, Yun', 2],
    ['Hsiao, Yun & Li, Yun & Liu, Zhenhua & Pang, Hong', 3],
    ['Hsiao, Yun & Ondřej Konvička & Chiun-Cheng Ko', 10],
    ['Jiang, Ri-Xin & Huang, Xiu-Dong & Yang, Lin & Chang, Zhi-Min', 1],
    ['Majka, Christopher G. & Pollock, Darren A.', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1]
  ]);
  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);