function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdullin, Shamil R. & Nikulin, Arthur Yu. & Bagmet, Veronika B.', 1],
    ['Gkelis, Spyros & Ourailidis, Iordanis & Panou, Manthos', 208],
    ['Gupta, Pratibha', 2],
    ['Luz, Ruben & Cordeiro, Rita & Fonseca, Amelia', 13],
    ['Machado de Lima, N. M. & Branco, L. H. Z.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=225)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);