function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cruz, Paulo Vilela & Salles, Frederico Falcão & Hamada, Neusa', 13],
    ['Cruz, Paulo Vilela & Usher, Andrew K. & Jacobus, Luke M.', 5],
    ['Emmerich, Daniel & Molineri, Carlos', 1],
    ['Emmerich, Daniel & Nieto, Carolina', 2],
    ['Gutiérrez, Yeisson & Dias, Lucimar Gomes', 1],
    ['L, Carlos Naranjo & Peters, Janice G. & del, Pedro López', 1],
    ['Lima, Lucas & Salles, Frederico Falcaõ', 1],
    ['Lima, Lucas R. C. & Cruz, Paulo Vilela & Pinheiro, Ulisses', 1],
    ['Nieto, Carolina & Salles, Frederico Falcaõ', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);