function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 1],
    ['Angulo, Arturo', 2],
    ['Ardila Rodríguez, C. A.', 2],
    ['Batista-Silva, Valéria Flávia & Frota, Augusto', 1],
    ['Boulenger, George Albert', 2],
    ['Bussing, William A.', 1],
    ['Cope, Edward Drinker', 3],
    ['Eigenmann, C. H.', 4],
    ['Fowler, Henry Weed', 2],
    ['Hoedeman, J. J.', 2],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 3],
    ['Meinken, H.', 2],
    ['Myers, G. S.', 3],
    ['Netto-Ferreira, André L.', 3],
    ['Steindachner, F.', 4],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    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);