function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annunziata, Bruno B. & Cavalcanti, Thaynã', 4],
    ['Barbara, Calcinai', 3],
    ['Barros, Lydia Vieira De & Santos, George Garcia', 4],
    ['Goodwin, Claire & Brickle, Paul', 3],
    ['Gómez, Patricia', 8],
    ['Kang, Dong Won & Kim, Hyung June', 3],
    ['Lehnert, Helmut & Stone, Robert P.', 4],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 6],
    ['Samaai, Toufiek & Pillay, Ruwen & Janson, Liesl', 4],
    ['Schejter, Laura & Cristobo, Javier & Ríos, Pilar', 3],
    ['Turner, Thomas L. & Lonhart, Steve I.', 5],
    ['Ugalde, Diana & Fernandez, Julio C. C. & Gómez, Patricia', 5],
    ['Van Soest, Rob W. M.', 13],
    ['Van, Rob W. M.', 8],
    ['Zea, Sven & Rodríguez, Angélica & Martínez, Ana María', 9],
    ['Other (22)', 34]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=116)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);