function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Arturo', 14],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 5],
    ['Berg, C.', 1],
    ['Bleeker, Pieter', 2],
    ['Chabanaud, P.', 3],
    ['Clark, H. W.', 1],
    ['Donascimiento, Carlos & Cárdenas-Bautista, Johann-Stephens', 1],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['Hamilton, F. Buchanan', 1],
    ['Jordan, David Starr', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Peters, Wilhelm Carl Hartwig', 2],
    ['Ramos, R. T. da C.', 2],
    ['Steindachner, F.', 3],
    ['Voronina, Elena P. & Volkova, Galina A.', 2],
    ['Other (11)', 11]
  ]);
  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);