function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bastida-Zavala, J. Rolando & Buelna, Alondra Sofía Rodríguez', 1],
    ['Capa, María & Murray, Anna', 3],
    ['Costa, Dimitri de Araujo & Dolbeth, Marina & Prata, Jessica', 1],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 8],
    ['Giangrande, Adriana & Licciano, Margherita', 1],
    ['Keppel, Erica & Tovar, Maria Ana & Ruiz, Gregory', 11],
    ['Lee, Aria L. & Capa, María & Dafforn, Katherine A.', 1],
    ['Mikac, Barbara', 1],
    ['Razmi Shah, Raz Shauqeena Batrisyea & Ibrahim, Yusof Shuaib', 1],
    ['Salazar-Vallejo, Sergio I. & Carrera-Parra, Luis F.', 1],
    ['Tovar-Hernández, María Ana & Knight-Jones, Phyllis', 8],
    ['Tovar-Hernández, María Ana & Salazar-Silva, Patricia', 1],
    ['Çinar, Melih Ertan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);