function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agassiz, David J. L. & Kozlov, Mikhail V.', 2],
    ['Das, Apurva & Singh, Navneet', 15],
    ['Ko, Jae-Ho & Yagi, Sadahisa & Hirowatari, Toshiya', 1],
    ['Kozlov, Mikhail V.', 107],
    ['Liao, Cheng-Qing & Hirowatari, Toshiya & Yagi, Sadahisa', 92],
    ['Sun, Hao & Li, Houhun', 7],
    ['Sun, Hao & Wang, Shuxia & Li, Houhun', 58]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=282)',
    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);