function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ai, Hong-Mu & Qi, Zhi-Hao & Su, Rong-Xiang & Liao, Zhi-Yu', 3],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Han, Taeman & Kang, Taehwa & Jeong, Jongchel & Lee, Youngbo', 4],
    ['Kurosawa, Yoshihiko', 5],
    ['Saunders, Edward', 1],
    ['Waterhouse, Charles Owen & Gahan, C. J.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);