function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bankov, Nikola & Todorov, Milcho & Ganeva, Anna', 26],
    ['Candolle, Anne Casimir Pyramus de', 24],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 6],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 8],
    ['Info Flora', 6],
    ['Jarvis, Charlie', 47],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 8],
    ['Linnaeus, Carolus', 22],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 7],
    ['Mathieu, Guido & Callmander, Martin W.', 12],
    ['Parsons, Michael J.', 9],
    ['Pino Infante, Guillermo Eloy & Samain, Marie-Stephanie', 17],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 5],
    ['Trujillo, William & Jaramillo, M. Alejandra & Toro, Diego', 7],
    ['Vandenberg, Natalia J. & Hanson, Paul E.', 7],
    ['Other (68)', 109]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=320)',
    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);