function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 39],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 8],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 65],
    ['Info Flora', 66],
    ['Jarvis, Charlie', 61],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 44],
    ['Kovtonyuk, Nataliya', 16],
    ['Kovtonyuk, Nataliya & Durand-Andro, Véronique', 10],
    ['Linnaeus, Carolus', 48],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 12],
    ['Prasanth, Arun & Sardesai, Milind M.', 8],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 12],
    ['Schmid, Maurice', 148],
    ['Sleumer, Hermann Otto', 21],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 13],
    ['Other (87)', 135]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=706)',
    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);