function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hernández-Orts, Jesús S. & Viola, M. Natalia Paso', 1],
    ['Hrbek, Tomas & da Silva, Vera Maria Ferreira & Dutra, Nicole', 1],
    ['Luque, José L. & Muniz-Pereira, Luís C. & Siciliano, Salvatore', 2],
    ['Oliveira, Marcela Alvares & Calouro, Armando Muniz', 1],
    ['Russell A. Mittermeier & Don E. Wilson', 4],
    ['Voss, Robert S. & Fleck, David W.', 1],
    ['Wilson, Don E. & Reeder, DeeAnn', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);