function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cakenberghe, Victor Van & Tungaluna, Guy-Crispin Gembu', 5],
    ['Dalhoumi, Ridha & Aissa, Patricia & Aulagnier, Stéphane', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 8],
    ['García-Prieto, Luis & Falcón-Ordaz, Jorge', 1],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 10],
    ['Jo, Yeong-Seok & Baccus, John T. & Koprowski, John L.', 1],
    ['Karl F. Koopman', 9],
    ['Monadjem, Ara & Schoeman, M. Corrie & Reside, April', 2],
    ['Thomas, Nikky M. & Duckworth, J. W. & Douangboubpha, Bounsavane', 1],
    ['Wilson, Don E. & Reeder, DeeAnn', 31]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=69)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);