function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andre, E.', 1],
    ['André, E', 1],
    ['Eguchi, Katsuyuki & Viet, Bui Tuan & Yamane, Seiki', 1],
    ['Emery, C.', 1],
    ['Forel, A.', 3],
    ['Mayr, G.', 3],
    ['Radchenko, Alexander G. & Fisher, Brian L. & Esteves, Flavia A.', 8],
    ['Schmidt, C. A. & Shattuck, S. O.', 2],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);