function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Batuwita, Sudesh & Benjamin, Suresh P.', 4],
    ['Bedoya-Roqueme, Edwin & Tizo-Pedroso, Everton & Barbier, Eder', 2],
    ['Beier, Max', 24],
    ['Chamberlin, Joseph Conrad', 2],
    ['Dashdamirov, Selvin D.', 1],
    ['Feio, J. L. De Araújo', 1],
    ['Gardini, Giulio & Galli, Loris & Zinni, Matteo', 1],
    ['Harvey, Mark S.', 5],
    ['Henderickx, Hans', 1],
    ['Mahnert, Volker', 6],
    ['Murthy, V. A. & Ananthakrishnan, Taracad Narayanan', 3],
    ['Neethling, J. A.', 6],
    ['Neethling, Jan Andries & Haddad, Charles R.', 9],
    ['Novák, János & Dányi, László', 2],
    ['Novák, János & Harvey, Mark S.', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=77)',
    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);