function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bester, Stoffel P. & Steyn, Hester M.', 2],
    ['Callmander, Martin W. & Durbin, Olivier D. & Lack, Hans-Walter', 2],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Cassar, Thomas & Mifsud, David & Decae, Arthur E.', 3],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 1],
    ['Decae, Arthur & Pantini, Paolo & Isaia, Marco', 4],
    ['Jarvis, Charlie', 1],
    ['Pocock, Reginald Innes', 2],
    ['ZONSTEIN, SERGEI & MARUSIK, YURI M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);