function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hochberg, Rick & Cannon, Lester R. G.', 2],
    ['Khalili, Zahra & Rahimian, Hassan & Pazooki, Jamile', 1],
    ['Maghsoudlou, Abdolvahab & Bulnes, Veronica N. & Rahimian, Hassan', 2],
    ['Oya, Yuki & Kajihara, Hiroshi', 1],
    ['Ramos-Sánchez, Mariela & Bahia, Juliana', 3],
    ['Rodríguez, Jorge & Grande, Cristina & Bulnes, NataliaVeronica', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);