function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 2],
    ['Alderwerelt van Rosenburgh, Capt. C. R. W. K.', 1],
    ['Blume, Carl Ludwig von', 2],
    ['Christenhusz, Maarten J. M. & Schneider, Harald', 1],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 7],
    ['Christensen, Carl C.', 3],
    ['Copeland, Edwin Bingham', 2],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Gonzales, Jasivia & Kessler, Michael', 58],
    ['Holttum, Richard Erick', 4],
    ['Hooker, William Jackson & Baker, John Gilbert', 1],
    ['Jarvis, Charlie', 3],
    ['Lima, Lucas Vieira & Salino, Alexandre', 2],
    ['Rosenstock, Eduard', 3],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=94)',
    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);