function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amon, Diva J & Ziegler, Amanda F & Kremenetskaia, Antonina', 2],
    ['Granja-Fernández, Rebeca & Hendrickx, Michel E.', 9],
    ['Lyman, T.', 32],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 21],
    ['Martynov, Alexander', 4],
    ['Mcknight, Donald G.', 3],
    ['Mills, V. Sadie & O\'Hara, Timothy D.', 4],
    ['Nethupul, Hasitha & Stoehr, Sabine & Zhang, Haibin', 9],
    ['Nethupul, Hasitha & Stöhr, Sabine & Zhang, Haibin', 7],
    ['Numberger-Thuy, Lea D. & Thuy, Ben', 2],
    ['O’Hara, Timothy D. & Thuy, Ben', 7],
    ['Rodrigues, Clara F. & Paterson, Gordon L. J.', 2],
    ['Stöhr, Sabine', 8],
    ['Stöhr, Sabine & O’Hara, Timothy D.', 3],
    ['Thuy, Ben', 127],
    ['Other (12)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=253)',
    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);