function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Edwards, Frederick Wallace', 1],
    ['Leader, John P.', 1],
    ['Marigo, Thaís Coimbra & Lamas, Carlos José Einicker', 1],
    ['Saether, Ole A. & Andersen, Trond', 1],
    ['Sublette, J. E. & Wirth, Willis Wagner', 1],
    ['Tokunaga, Masaaki', 1],
    ['Wirth, Willis Wagner', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);