function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 276],
    ['Beek, Abraham Van De', 75],
    ['Boza Espinoza, Tatiana Erika & Kessler, Michael', 58],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 35],
    ['Christenhusz, Maarten J. M. & Väre, Henry', 35],
    ['Fougère-Danezan, Marie & Joly, Simon & Bruneau, Anne', 103],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 236],
    ['I. Klášterský', 62],
    ['Info Flora', 387],
    ['Jarvis, Charlie', 208],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 177],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 66],
    ['Linnaeus, Carolus', 156],
    ['Liu, Bin-Bin & Wang, Yu-Bing & Hong, De-Yuan & Wen, Jun', 71],
    ['Suh, Soo-Jung', 33],
    ['Other (144)', 499]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=2477)',
    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);