function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Arturo', 2],
    ['Batista-Silva, Valéria Flávia & Frota, Augusto', 1],
    ['Cox Fernandes, C. & Nogueira, Adília & Williston, Andrew', 1],
    ['Crampton, William Gareth Richard & Thorsen, D. H.', 1],
    ['De Santana, Carlos D. & Crampton, William G. R.', 11],
    ['Fernández-Yépez, A.', 1],
    ['Ferraris, Carl J. & Jr & Santana, Carlos David de', 21],
    ['Giora, Julia & Malabarba, Luiz R.', 1],
    ['Giora, Julia & Malabarba, Luiz R. & Crampton, William', 1],
    ['Hoedeman, J. J.', 2],
    ['Hopkins, Carl D.', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Ota, Renata Rúbia & Deprá, Gabriel de Carvalho', 1],
    ['Sousa, Trycia & Wosiacki, Wolmar B. & Muriel-Cunha, Janice', 2],
    ['Sullivan, John P. & Zuanon, Jansen & Cox Fernandes, Cristina', 3],
    ['Other (1)', 1]
  ]);
  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);