function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['COCK, MATTHEW J. W. & CONGDON, T. COLIN E.', 15],
    ['Cao, Chenglong & Huang, Siyao & Xu, Yongqiang & Wu, Haomin', 1],
    ['Collins, Steve C.', 2],
    ['Huang, Zhen-Fu & Chiba, Hideyuki & Fei, Wen & Fan, Xiao-Ling', 8],
    ['Irungbam, Jatishwor Singh & Meitei, Laishram Ricky', 16],
    ['Li, Hua-Zhao & Liu, Zhe & Li, Jia-Ling', 1],
    ['Xue, G. X.', 1],
    ['Xue, Gou-Xi & Inayoshi, Yutaka & Li, Meng & Zhang, Fu-Ming', 2],
    ['Xue, Guo-Xi & Sun, Hao & Sun, Zhou & Wang, Shao-Neng', 10],
    ['Zhu, J. Q. & Li, L. Z.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=57)',
    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);