function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dijkstra, H. H. & Maestrati, P.', 14],
    ['Dijkstra, Henk H.', 14],
    ['Dijkstra, Henk H. & Beu, Alan G.', 15],
    ['Dijkstra, Henk H. & Gofas, Serge', 1],
    ['Dijkstra, Henk H. & Kastoro, W. W.', 1],
    ['Dijkstra, Henk H. & Maestrati, Philippe', 59],
    ['Dijkstra, Henk H. & Marschall, Bruce A.', 1],
    ['Dijkstra, Henk H. & Moolenbeek, Robert G.', 1],
    ['Hickman, Carole S.', 1],
    ['Negri, Mauro Pietro & Corselli, Cesare', 1],
    ['Raines, Bret & Huber, Markus', 2],
    ['Saether, Kristian P. & Jingeng, Sha & Little, Crispin T. S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=112)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);