function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alcock, Alfred William', 1],
    ['Amaoka, Kunio', 2],
    ['Amaoka, Kunio & Mihara, E.', 1],
    ['Amaoka, Kunio & Mihara, E. & Rivaton, Jacques', 3],
    ['Amaoka, Kunio & Séret, B.', 1],
    ['Chabanaud, P.', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 3],
    ['Hensley, Dannie A.', 1],
    ['Hubbs, Carl L.', 1],
    ['Jordan, David Starr & Evermann, Barton Warren', 1],
    ['Jordan, David Starr & Starks, E. C.', 1],
    ['Nielsen, Jørgen G.', 1],
    ['Poey, F.', 1],
    ['Regan, C. T.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);