function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Csorba, Gábor', 1],
    ['Csorba, Gábor & Görföl, Tamás & Wiantoro, Sigit', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 4],
    ['Huang, Joe Chun-Chia & Jazdzyk, Elly Lestari & Nusalawo, Meyner', 2],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 3],
    ['Karl F. Koopman', 3],
    ['Saikia, Uttam & Ruedi, Manuel & Csorba, Gabor', 1],
    ['Thomas, Nikky M. & Duckworth, J. W. & Douangboubpha, Bounsavane', 1],
    ['Voon-Ching Lim & Rosli Ramli & Subha Bhassu & John-James Wilson', 1],
    ['Wilson, Don E. & Reeder, DeeAnn', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);