function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bancroft, E. N.', 1],
    ['Fernandez, Juan Manuel & Thomann, Luz & Fandiño, Blas', 2],
    ['Geoffroy Saint-Hilaire, Étienne', 2],
    ['Illiger, Johann Karl Wilhelm', 1],
    ['LeCroy, Mary', 1],
    ['Lima, Rafael Dantas & Silveira, Luís Fábio', 5],
    ['Machado, Tatiana Lemos da Silva & Marques de Oliveira, Uéslei', 4],
    ['Mitchill, S. L.', 1],
    ['Muniz-Pereira, Luís C. & Vieira, Fabiano M. & Luque, José L.', 1],
    ['Risso, A.', 1],
    ['Sánchez-Montes, Sokani & Colunga-Salas, Pablo', 1],
    ['Vieillot, Louis Pierre', 3],
    ['Vitorino, Breno Dias & Vilas Boas da Frota, Angélica', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);