function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Bukejs, Andris', 3],
    ['Bukejs, Andris & Alekseev, Vitalii I.', 2],
    ['Crotch, G. R.', 1],
    ['Grouvelle, A.', 3],
    ['Ivie, Michael A. & Ślipiński, S. Adam', 1],
    ['Motschulsky, Victor de', 1],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Robert H. Turnbow, Jr. & Thomas, Michael C.', 1],
    ['Thomas, Michael C. & Robert H. Turnbow, Jr. & Steiner, Warren', 1],
    ['Waterhouse, Chas. O.', 5],
    ['Zubarán, Gastón E. & Di Iorio, Osvaldo R.', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);