function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anjos-Santos, Danielle & Carriço, César & Costa, Janira Martins', 2],
    ['DeMarmels, Jurg', 3],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 2],
    ['Lozano, Federico', 2],
    ['Mauffray, William F. & Tennessen, Kenneth J.', 1],
    ['Márquez, Javier A. & Principe, Romina E. & Berejnoi, Diego E.', 1],
    ['Román-Heracleo, Jareth & Springer, Monika', 2],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 8],
    ['Vilela, Diogo Silva & Venâncio, Henrique & Santos, Jean Carlos', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);