function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Botov, Andreas & Phung, Trung My & Nguyen, Truong Quang', 1],
    ['Donbundit, Nattasuda & Sumontha, Montri', 1],
    ['Luu, Vinh Quang & Grismer, Jesse L. & Hoang, Tuoi Thi', 1],
    ['Luu, Vinh Quang & Nguyen, Thuong Huyen & Le, Minh Duc', 2],
    ['Nguyen, Thuong Huyen & Luu, Vinh Quang & Sitthivong, Saly', 1],
    ['Nguyen, Thuong Huyen & Sitthivong, Saly & Ngo, Hanh Thi', 1],
    ['Pauwels, Olivier S. G. & Chomngam, Nirut & Larsen, Henning', 1],
    ['Pauwels, Olivier S. G. & Panitvong, Nonn & Kunya, Kirati', 1],
    ['Sumontha, Montri & Chomngam, Nirut & Phanamphon, Eakarit', 1],
    ['Ziegler, Thomas & Botov, Andreas & Nguyen, Tao Thien', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);