function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bukshuk, Natalia A. & Maikova, Olga O.', 3],
    ['Calheira, Ludimila & Pinheiro, Ulisses', 3],
    ['Copeland, John & Pronzato, Roberto & Manconi, Renata', 2],
    ['Curini-Galletti, M. & Oggiano, G. & Casu, M.', 7],
    ['Hernández, Victor M. Q. & Barreat, José G. N.', 1],
    ['Lim, Swee-Cheng & Tan, Koh-Siang', 1],
    ['Manconi, R. & Pronzato, R.', 3],
    ['Manconi, Renata & Copeland, John & Kunigelis, Stan', 2],
    ['Manconi, Renata & Ruengsawang, Nisit & Ledda, Fabio D.', 2],
    ['Nicacio, Gilberto & Pinheiro, Ulisses', 4],
    ['Pinheiro, U. S. & Hajdu, E. & Correa, M. D.', 1],
    ['Pinheiro, Ulisses & Docio, Loyana & Nicacio, Gilberto', 2],
    ['Pinheiro, Ulisses & Nicacio, Gilberto', 1],
    ['Pinheiro, Ulisses & Silva, Carlos & Calheira, Ludimila', 2],
    ['Robert, Chloé & Pereira, Raquel & Thollesson, Mikael', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);