function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Kanellis', 2],
    ['B. Folkmanova', 2],
    ['Bozena Folkmanova', 2],
    ['Jadwiga Kaczmarek', 1],
    ['K. W. Verhoeff', 5],
    ['Karl W. Verhoeff', 1],
    ['P. Manfredi', 4],
    ['Shear, William A.', 4],
    ['Von Karl W. Verhoeff', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    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);