function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blume, Carl Ludwig von', 1],
    ['Chang, Yanfen & Zhang, Guocheng & Wang, Zhixin & Cao, Limin', 1],
    ['Chao, Yi-Shan & Ebihara, Atsushi & Chiou, Wen-Liang', 1],
    ['Chao, Yi-Shan & Huang, Yu-Fang & Dong, Shi-Yong', 1],
    ['Christensen, Carl C.', 5],
    ['Copeland, Edwin Bingham', 3],
    ['Elie, Ntirenganya & Yajin, Li & Yanlan, Xie & Yanli, Zhou', 1],
    ['Field, Ashley Raymond', 4],
    ['Holttum, Richard Erick', 12],
    ['Hori, Kiyotaka & Kanemitsu, Hironobu', 2],
    ['Lorence, David H. & Wagner, Warren L. & Wood, Kenneth R.', 3],
    ['Mettenius, Georg Heinrich', 2],
    ['Roux, Jacobus P.', 2],
    ['Shalimov, Aleksandr Petrovich & Wu, Yu-Dong & Zhang, Xian-Chun', 25],
    ['Wu, Yi-Hsuan & Sun, Chih-Yun & Ebihara, Atsushi & Lu, Ngan Thi', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);