function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allgén, C. A.', 4],
    ['Armenteros, Maickel & Vincx, Magda & Decraemer, Wilfrida', 5],
    ['Holovachov, Oleksandr', 54],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 69],
    ['Leduc, Daniel', 40],
    ['Li, Ting & Ban, Shuyan & Huang, Yong', 5],
    ['P. A. A. LOOF', 6],
    ['Prado-Vera, Ignacio Cid Del & Ferris, Howard', 7],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 22],
    ['Sun, Yan & Huang, Yong', 6],
    ['Tchesunov, Alexei V. & Miljutina, Maria A.', 6],
    ['Wilhelm Schneider', 5],
    ['Zhai, Hongxiu & Geng, Chunxiao & Sun, Jun', 6],
    ['Zograf, Julia K. & Pavlyuk, Olga N. & Trebukhova, Yulia A.', 7],
    ['Árpád, Soós', 11],
    ['Other (41)', 91]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=344)',
    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);