function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['BOCAK, L. & MATSUDA, K.', 5],
    ['Gorham, Henry Stephen', 2],
    ['Kazantsev, S. V.', 89],
    ['Motyka, Michal & Bocak, Ladislav', 1],
    ['Nascimento, Elynton Alves Do & Bocakova, Milada', 11],
    ['Pérez-Hernández, Cisteil Xinum', 47],
    ['Ramsdale, Alistair S. & Kazantsev, Sergey V.', 1],
    ['Tvardik, David & Bocak, Ladislav', 12],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=171)',
    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);