function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ananjeva, Natalia B. & Milto, Konstantin D.', 1],
    ['Barrio-Amorós, Cesar L. & Ortíz, Juan C.', 1],
    ['Castiglia, Riccardo & Annesi, Flavia & Bezerra, Alexandra M. R.', 2],
    ['Castiglia, Riccardo & Flores-Villela, Oscar Alberto', 1],
    ['Conradie, Werner & Branch, William R. & Watson, Gillian', 7],
    ['Koch, Claudia & Flecks, Morris & Venegas, Pablo J.', 3],
    ['Mccranie, James R. & Hedges, S. Blair', 1],
    ['Ramirez-Reyes, Tonatiuh & Barraza-Soltero, Ilse K.', 1],
    ['Ramírez-Reyes, Tonatiuh & Flores-Villela, Oscar', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);