function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bukhtiyarova, Lyudmila N.', 19],
    ['Guerrero, José M. & Vouilloud, Amelia A.', 6],
    ['Ruwer, Daiane Trevisan & Blanco, Saúl & Rodrigues, Liliana', 6],
    ['Ruwer, Daiane Trevisan & Rodrigues, Liliana', 2],
    ['Silva, Weliton Jose da & Jahn, Regine & Menezes, Mariangela', 3],
    ['Siver, Peter A. & Oddsund, Erik & Lott, Anne M.', 3],
    ['Taylor, Jonathan C. & Cocquyt, Christine & Walsh, Gina', 3],
    ['Veselá, Jana & Johansen, Jeffrey R.', 3],
    ['Vijver, Bart Van De & Lange-Bertalot, Horst & Goeyers, Charlotte', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);