function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Yong-Bin & Chen, Xin-Yan & Ma, Liang & Zhao, Zhuang', 1],
    ['Info Flora', 1],
    ['Jarvis, Charlie', 1],
    ['Ju, Wen-Bin & Li, Xiong & Deng, Heng-Ning & Li, Meng', 1],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 1],
    ['Li, Bo & Le, Xin-Gui & Min, Dao-Zhang & Xu, Lin & Chen, Bin', 1],
    ['Makino, Tomitaro', 1],
    ['Xiang, Chun-Lei & Pan, Hong-Li & Min, Dao-Zhang & Zhang, Dai-Gui', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);