function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dennis, D. Steve & Barnes, Jeffrey K. & Knutson, Lloyd', 5],
    ['Estrada, Alejandro & Nápoles, Jesús Romero', 2],
    ['Montanuci, Pietra S. & Vieira, Rodrigo & Krolow, Tiago K.', 3],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 11],
    ['Vieira, Rodrigo & Camargo, Alexssandro & Pollet, Marc', 13],
    ['Wolff, Marta & Lamas, Carlos José Einicker', 12],
    ['Yepes, Sol & Forero, Dimitri', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);