function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo, Diogo & Alves, Marccus', 8],
    ['De Wilde, Willem J. J. O. & Duyfjes, Brigitta E. E.', 28],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 6],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 11],
    ['Holstein, Norbert', 46],
    ['Info Flora', 11],
    ['Jarvis, Charlie', 56],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 5],
    ['McQuate, Grant T. & Liquido, Nicanor J.', 12],
    ['Merrill, Elmer Drew & Perry, Lily May', 8],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 9],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 7],
    ['Umoh, Omodot Timothy & Bassey, Margaret Emmanuel', 10],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 12],
    ['de Wilde, Willem Jan Jacobus Oswald', 10],
    ['Other (33)', 53]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=292)',
    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);