function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 4],
    ['Amoroso, Victor B. & Acola, Mescel S. & Guiang, Maria Melanie M.', 2],
    ['Amoroso, Victor B. & Cariño, Yvonne Love L.', 1],
    ['Amoroso, Victor B. & Coritico, Fulgent P. & Fritsch, Peter W.', 1],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 2],
    ['Christ, Konrad Hermann Heinrich', 1],
    ['Christenhusz, Maarten J. M.', 1],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 15],
    ['Hooker, William Jackson & Baker, John Gilbert', 2],
    ['Jarvis, Charlie', 10],
    ['Legrand, Julien & Pons, Denise & Nishida, Harufumi', 8],
    ['Matos, Fernando B. & Bohn, Amabily & Labiak, Paulo H.', 1],
    ['Page, Christopher N. & Collinson, Margaret E.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);