function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chagas-Jr, Amazonas & Bichuette, Maria Elina', 1],
    ['Cupul-Magaña, Fabio Germán', 1],
    ['Decker, Peter & Reip, Hans Simon & Voigtlaender, Karin', 2],
    ['Dyachkov, Yurii V. & Farzalieva, Gyulli Sh. & Tuf, Ivan H.', 2],
    ['Edgecombe, Gregory D.', 2],
    ['Edgecombe, Gregory D. & Giribet, Gonzalo', 3],
    ['Enghoff, Henrik & Akkari, Nesrine & Pedersen, Jan', 4],
    ['Kiria, Eleonora & Barjadze, Shalva & Tuf, Ivan Hadrian', 1],
    ['Ma, Huiqin & Pei, Sujian & Hou, Xiaojie & Zhu, Tiegang', 2],
    ['Nefediev, P. S. & Farzalieva, G. Sh. & Efimov, D. A.', 1],
    ['Penghai Qiao & Wen Qin & Huiqin Ma & Tongzuo Zhang', 1],
    ['Pugh, P. J. A.', 3],
    ['Shear, William A.', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    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);