function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abolafia, Joaquín & Ruiz-Cuenca, Alba N.', 1],
    ['Allgén, C. A.', 1],
    ['Fadeeva, Natalia & Mordukhovich, Vladimir & Zograf, Julia', 5],
    ['Gagarin, Vladimir G. & Naumova, Tatyana V.', 1],
    ['Holovachov, Oleksandr', 17],
    ['Holovachov, Oleksandr & Boström, Sven', 10],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 11],
    ['Leduc, Daniel', 4],
    ['Li, Yongxiang & Guo, Yuqing', 4],
    ['Pinto, Taciana Kramer & Neres, Patricia Fernandes', 2],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 4],
    ['Shimada, Daisuke & Suzuki, Atsushi C. & Tsujimoto, Megumu', 2],
    ['Villares, Gabriela & Martelli, Antonela & Russo, Virginia Lo', 5],
    ['Zhang, Z. N.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=69)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);