function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 262],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 175],
    ['Dollfuss, H.', 81],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 539],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 122],
    ['Info Flora', 668],
    ['Jarvis, Charlie', 574],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 463],
    ['Linnaeus, Carolus', 267],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 149],
    ['Oliveira, Adriana & Bove, Claudia', 236],
    ['Prunera-Olivé, Joan & Vorontsova, Maria S. & Williams, Emma V.', 295],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 376],
    ['Williams, Emma Victoria & Elia Ntandu, John & Ficinski, Pawel', 464],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 202],
    ['Other (499)', 2847]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=7720)',
    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);