function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broek, E. Van Den', 1],
    ['Chandler, Asa C.', 1],
    ['Coil, William H. & Kuntz, Robert E', 1],
    ['Faust, Ernest Carroll', 1],
    ['Kuntz, Robert E & Chandler, Asa C.', 1],
    ['Robinson, Edwin J.', 2],
    ['Scholz, T. & Aguirre-Macedo, M. L. & Salgado-Maldonado, G.', 2],
    ['Ukoli, F. M. A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);