function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bañon, Rafael & Arronte, Juan Carlos', 1],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 4],
    ['Collett, R.', 1],
    ['Golani, Daniel', 2],
    ['Golani, Daniel & Bogorodsky, Sergey V.', 1],
    ['Golani, Daniel & Fricke, Ronald', 1],
    ['Gomon, Martin F.', 2],
    ['Gon, Ofer', 1],
    ['Goren, Menachem & Galil, Bella S.', 1],
    ['Kotlyar, A. N. A.', 7],
    ['Parr, A. E.', 2],
    ['Schwarzhans, Werner & Mors, Thomas & Engelbrecht, Andrea', 2],
    ['Su, Yo & Lin, Hsiu-Chin & Ho, Hsuan-Ching', 4],
    ['Whitley, Gilbert P.', 2],
    ['Other (20)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    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);