function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bailey, Jacob Whitman', 1],
    ['Duan, Lin-Dong & Lin, Yun & Lu, Zhen', 1],
    ['Gibbs, Lilian Suzette', 1],
    ['Hareesh, Vadakkoot Sankaran & Sabu, Mamiyil', 3],
    ['Jarvis, Charlie', 1],
    ['Linnaeus, Carolus', 2],
    ['Liu, Qin & Chen, Ao-Xue & Liao, Xiao-Wen & Liu, Quan-Ru', 1],
    ['Merrill, Elmer Drew & Perry, Lily May', 10],
    ['Ordas, Jorge Anton D. & Pinarok, Neil Alejandro A.', 2],
    ['Ridley, Henry Nicholas', 4],
    ['Royen, Pieter van', 3],
    ['Shang, Chao & Xue, Jun & Yang, Yanjie & Liao, Xiaowen', 1],
    ['Valeton, Theodoric', 6],
    ['Yang, Chuan-Dong & He, Xuan-Ze & Gou, Guang-Qian', 1],
    ['Zhou, Shi-Shun & Li, Ren & Quan, Rui-Chang & Shine, Law', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);