function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexander Nater & Maja P. Mattle-Greminger & Anton Nurcahyo', 1],
    ['Amori, Giovanni & Segniagbeto, Gabriel Hoinsoude & Decher, Jan', 1],
    ['Berger, Lee R.', 1],
    ['Brandon-Jones, Douglas & Groves, Colin P. & Jenkins, Paulina D.', 4],
    ['Canington, Stephanie L', 2],
    ['Chaimanee, Yaowalak & Suteethorn, Varavudth', 1],
    ['Colin P. Groves', 10],
    ['Dart, Raymond A.', 1],
    ['Güleç, Erksin Savaş & Sevim, Ayla & Pehlevan, Cesur', 2],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 3],
    ['Lee R Berger & John Hawks & Darryl J de Ruiter', 12],
    ['Linnaeus, Carolus', 9],
    ['Matschie, Paul', 3],
    ['Russell A. Mittermeier & Anthony B. Rylands & Don E. Wilson', 7],
    ['Wilson, Don E. & Reeder, DeeAnn', 20],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);