function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Azevedo, Celso O.', 31],
    ['Elie, Ntirenganya & Yajin, Li & Yanlan, Xie & Yanli, Zhou', 9],
    ['Gautier, Laurent & Lachenaud, Olivier & Burgt, Xander van der', 5],
    ['Gautier, Laurent & Naciri, Yamama', 3],
    ['Jarvis, Charlie', 18],
    ['Krause, Johann Wilhelm', 5],
    ['Lam, Herman Johannes', 13],
    ['Laurent Gautier & Yamama Naciri & Arne A. Anderberg', 3],
    ['Linnaeus, Carolus', 5],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 3],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 111],
    ['Royen, Pieter van', 16],
    ['Swenson, Ulf & Munzinger, Jerome K. & Bartish, Igor V.', 8],
    ['Vink, Willem (Willen)', 11],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 4],
    ['Other (30)', 40]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=285)',
    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);