function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo, Marcel Santos De & Feres, Reinaldo José Fazzio', 1],
    ['Bagheri, Mohammad & Zarei, Elham & Ahaniazad, Mansoureh', 3],
    ['Berlese, Antonio', 1],
    ['Ewing, Henry Ellsworth', 1],
    ['Khanjani, Mohammad & Hoseini, Mohammad Ahmad & Amini, Fatemeh', 2],
    ['Navaei-Bonab, R. & Bagheri, M. & Ueckermann, E. A. & Zarei, E.', 2],
    ['Saboori, Alireza & Shirvani, Zeinab', 1],
    ['Skvarla, Michael J. & Fisher, J. Ray & Dowling, Ashley P. G.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);