function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bruneau, Anne & de Queiroz, Luciano Paganucci', 1],
    ['Guerra, Ethiéne & Soares, Marcos Vinicius Batista', 3],
    ['Kostermans, Andre Joseph Guillaume Henri', 2],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 8],
    ['Navia, Denise & Duarte, Mercia Elias & Flechtmann, Carlos H. W.', 1],
    ['Rauber, Cristiane Ritter & Lima, Laura Cristina Pires', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);