function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 2],
    ['Geiger, Daniel L.', 13],
    ['Helwerda, Renate Ariane & Wesselingh, Frank Pieter', 14],
    ['Herbert, David G.', 16],
    ['Ortega, José Rafael & Gofas, Serge', 2],
    ['Poppe, Guido & Tagaro, Sheila & Dekker, Henk', 12],
    ['Salvador, Rodrigo B. & Cavallari, Daniel C. & Simone, Luiz R. L.', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    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);