function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 1],
    ['Chaudhary, Lal Babu & Bajpai, Omesh & Behera, Soumit Kumar', 1],
    ['Chen, Jun-Tong & Zhang, Dai-Gui & Lv, Zhen-Yu & Huang, Xian-Han', 1],
    ['Gillespie, Lynn J. & Saarela, Jeffery M. & Sokoloff, Paul C.', 1],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 10],
    ['Info Flora', 10],
    ['Jarvis, Charlie', 6],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 10],
    ['Stöhr, O. & Pilsl, P. & Essl, F. & Hohla, M. & Schröck, C.', 1],
    ['Stöhr, O. & Pilsl, P. & Essl, F. & Wittmann, H. & Hohla, M.', 1],
    ['Turdiboev, Obidjon A. & Rouhan, Germinal & Allamurotov, Akmal L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);