function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archangelsky, Miguel', 1],
    ['Deler-Hernandez, Albert & Cala-Riquelme, Franklyn', 20],
    ['Fikáček, Martin & Hebauer, Franz', 4],
    ['Hebauer, Martin Fiká Č Ek Franz & Hansen, Michael', 9],
    ['Hoshina, Hideto Dr.', 1],
    ['Sharp, David', 1],
    ['Short, Andrew E. Z. & Fikáček, Martin', 13],
    ['d\'Orchymont, Armand', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);