function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breure, Abraham S. H. & Ablett, Jonathan D.', 4],
    ['Brook, Fred J. & Ablett, Jonathan D.', 2],
    ['Cunha, Carlo M. & Salvador, Rodrigo B.', 31],
    ['Cunha, Carlo M. & Simone, Luiz Ricardo L.', 2],
    ['Draparnaud, Jacques Philippe Raymond', 8],
    ['Habe, Tadashige', 2],
    ['Hansen, Thomas', 2],
    ['Helwerda, Renate A.', 17],
    ['Luca, Javier Di & Zelaya, Diego G.', 4],
    ['Moore, Charles', 4],
    ['Negri, Mauro Pietro & Corselli, Cesare', 3],
    ['Salvador, Rodrigo B. & Cunha, Carlo', 3],
    ['Sowerby, James DeCarle', 4],
    ['Valdés, Ángel', 48],
    ['Valdés, Ángel & Feliciano, Kendall & Malaquias, Manuel A. E.', 13],
    ['Other (15)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=165)',
    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);